Objective: In order to prevent and cure the more and more worse greenhouse effects, climate change impacts and living environment for man kinds, new dangerious factors must be found, identified and prevented. Method: Summarized and research the facts of China as the top consumer of refrigerant. So China is the top consumer and elininater of the Freon and alike chemicals. So call for preventing and curing the worse green house effects, climate change impacts caused by the Freon and alike chemicals. Results: As China is the biggest country in the world with 1.4billions people and top economic power. China should be the leader to control the Freon and alike chemicals, and the green house effect and the global warming. But now, China has been still being the top consumer of the Freon and alike chemicals or the top consumer of refrigerant. We must face squarely what shortcomings we have had. And correct it at once.As the facts tell us the Freon and alike chemicals have been the dangerious factors of the green house effect and the global warming. So we can create new policy and science to reduce and control the Freon and alike chemicals at once. And so on the green house effect and the global warming. Everywhere in China there has been being all air conditioners, ice chestn and refrigerators have been consuming and emitting the Freon and alike chemicals. After China had been producing main part of CFC of Freon in the world. And the CFC of Freon have been banned. China has been changing to HCFC of Freon and HFC of Freon as substitutes. It has been being known to all that every place in China, where people live and work. There must have air conditioners, ice chestn and refrigerators. From family households, factories, government offices, hospitals, tools of transportation, even the spacecrafts have been being equipped with air conditioners, ice chestn and refrigerators. All the air conditioners, ice chestn and refrigerators have been consuming and emitting the HCFC of Freon and HFC of Freon after CFC of Freon. Because the China is the biggest country in the world. The population of China is the much too more than any other country in the world. So the family households, factories, government offices, hospitals, tools of transportation must be much too more than any other country in the world. Therefore, the air conditioners, ice chestn and refrigerators also must be much too more than any other country in the world. At present, China must have been consuming and emitting the HCFC of Freon and HFC of Freon more than other countries. HCFC and HFC of Freon are not green products and environmental protection products Though HCFC of Freon has less effect to deplete the Ozone Layer. But it is not the perfect substances. Some HCFC of Freon have been being banned from usage. Which indicate that the HCFC of Freon are not green products and environmental protection products. While theoretically, the ODP (The Ozone Depletion Potential) of HFC of Freon is 0. But the Global warming potential(GWP) is very high. Therefore, the HFC of Freon are also not green products and environmental protection products. While China has been being the biggest and main producer and consumer of the banned CFC of Freon and the biggest and main producer and consumer of the HCFC and HFC of Freon. So Chinese air conditioners, ice chestn and refrigerators must make more Ozone Depletion and Global warming substances. Conclusion: The concrete policies must be created as soon as possible. Reducing the top consumer and elininater of the Freon and alike chemicals or create new chemicals without the worse green house effects, climate change impacts were China’s and world’s imperative policy.

Objective: In order to prevent and cure the more and more worse greenhouse effects, climate change impacts and living environment for man kinds, new administration strategies must be created. So the research has been done. Methods: Summarized and research the present situations and facts of preventing and curing the worse green house effects, climate change impacts and living environment. And create the new administration strategies. Results: The present situations and facts of preventing and curing the worse green house effects, climate change impacts and living environment are critical and in emergency. And the solutions have not been being effective. There are 8 facts for less effective doing have been summarized. They include the world now, mainly pay attention to CO2 emission reducing, but not all greenhouse gases, etc.. And the 9 new administration strategies have been proposed. The first one is that China, other countries and international professional agencies must change their administration thinking immediately. And pay broad and whole attention to reduce whole greenhouse gases to the aims of zero emission. Not just only play technology of Carbon Capture, Utilization and Storage. The second one is that China, other countries and international professional agencies must put the recovering the worse greenhouse effects and climate change impacts as first duty and responsibility. And the other 7 strategies are in the text. Conclusion: It is imperative to prevent and cure the worse green house effects, climate change impacts and living environment for man kinds as soon as possible. As the man kinds have been suffering from the worse living environment day and night in more and more intensive speed and damage. The research have summarized the 8 principles facts about the shortcomings in controlling the worse green house effects and climate change impacts. Which should be paid attention by the related professionals and administrators. And the 9 proposed new administration strategies should also be referenced by the related professionals and administrators. As this kind of research has not been reported by other professionals.

Secular declines in U.S. Treasury yields are concentrated in three-day windows around FOMC announcement dates. Cumulative yield changes during these short windows explain the secular decline in yields. This factor contains essential information on excess bond returns and outperforms well-known proxies for interest rate trends in prediction regressions. We estimate a dynamic term structure model to explain these empirical facts. The model suggests that the secular declines in Treasury yields over the past three decades were primarily due to reductions in expected interest rates, mostly during the FOMC announcement windows.

厘清当前国际分工下的价值链是具有全球性特征还是更具区域性特征,这是探究当前国际分工构成以及未来分工发展等根本性贸易问题的基础,具有重要的理论意义。文章利用CEPII 双边贸易流量数据库,测算产品的平均进口距离用于衡量 1995—2014 年间价值链生产在全球性特征上的变化,并与 Eaton 和 Kortum（2002）框架下构造的理想“全球价值链”进行比较,分析评估全球化进一步发展的潜力。研究显示,1995—2014 年间“全球价值链”的发展极为有限,平均进口距离只增长了约 300 千米,距离理想的“全球价值链”下的进口距离差距很大,特别是中间品贸易的进口距离较短,说明价值链分工仍主要体现为区域性特征。在价值链呈区域性特征的背景下,各国更倾向于达成区域性的自由贸易协定以支持区域性的价值链生产,即一国价值链的区域性越强,则该 国签订的贸易协定区域性倾向就越强。该效应体现为一国中间品进口距离增加 100 千米,则该国与其贸易协定伙伴国的平均距离就增加约 389 千米。文章揭示了当前价值链分工的区域性特征,部分解释了近年来多边贸易协定推进困难的原因。

We study the role of marriage for women's intergenerational mobility during the Ming-Qing (1368-1911) period. Using status information based on the timing of marriage from family histories in Central China, already in the early 1500s it is the case that daughters from rich families attain higher status over their lifetime than daughters from poorer families. This intergenerational status persistence is partly due to marital sorting because daughters from highstatus families tend to become the wives of sons who themselves come from rich families. Quantitatively, the correlation of 0.6 between the status of biological and in-law families means that marriage accounts for more than one third of total intergenerational status transmission, while not accounting for marriage overestimates mobility by more than 20 percent. Further underscoring the importance of marriage, typically the status of the in-law family plays a larger role for intergenerational status transmission than the child's biological grandparents. Over the period 1500 to 1900, the degree of marital sorting falls, as does intergenerational persistence. Lower investments in the marriage market to find a good match for a daughter go hand in hand with the fall in the returns to son education due to the decline of China's civil service examination.

This paper proposes a novel bond return (price or yield curve) prediction methodology, unifying the classical no arbitrage pricing framework, which is ubiquitous and serves as a fundamental and theoretical building block in mathematical finance, and empirical asset (bond) pricing methodologies, e.g., Bianchi, Büchner, & Tamoni (2021) for treasury bonds and Gu, Kelly, & Xiu (2020) for equities. The methodology can be viewed as a unification of theoretical and empirical asset pricing frameworks. Our method is mathematically and theoretically rigorous, arbitrage-free and meantime enjoys the flexibility offered by the empirical asset pricing framework, i.e., a potentially rich factor structure and accurate function approximations via machine learning regression. Real market back-testing studies show that our predictions are accurate, in the sense that the formulated equally-weighted treasury bond portfolios in China exchange-based markets bear significant positive returns. The average hit rate for yield curve prediction reaches 77.71% across all tenors and the related long-only trading strategy based on the prediction results in an annualized absolute return as high as 12.35% with Calmar ratio achieving 7.31 for equally-weighted portfolios. As a by-product of our prediction framework, spot yield curves can be predicted accurately in an arbitrage-free manner.

From 2013 onwards, the Chinese central government has subjected the largest state-owned enterprises (SOEs) to ‘disciplinary inspections’ to weed out and punish graft and other corruption. While this policy has been somewhat successful in punishing corruption—over 160 top SOE officials have been indicted—we show that the principal economic impact of these inspections has been to significantly cut investment by targeted firms, leading to a major decline in profitability, innovation and Tobin’s Q. Expenditures on R&D, entertainment, and travel also decline dramatically. The most obvious explanation is that the fear induced in SOE managers, who have limited risk-promoting equity holdings or incentive compensation and few external employment options, deterred them from taking risky but value-enhancing investments post-audit.

As the problem of global climate change becomes more severe, countries have proposed the goals of carbon capping and carbon neutrality. Green finance is an essential capacity support for achieving carbon peaking and carbon neutrality, and it can guide and stimulate social capital to invest in low-carbon industries and initiatives via marketbased mechanisms. Based on the panel data of Chinese prefecture-level cities from 2006 to 2020, this paper empirically examines the impact of green finance on carbon emission efficiency using a two-way fixed-effects model, conducts a regional heterogeneity analysis, and examines the threshold effect of economic development level and the mediating role of regional innovation. The results indicate that, first, green finance contributes significantly to the improvement of carbon emission efficiency, and second, the level of regional economic development has a double threshold effect on the contribution of green finance to the improvement of carbon emission efficiency. Third, regional innovation is an important green finance channel for influencing carbon emission efficacy. The sensitivity of carbon emission efficiency to the green finance index demonstrates an inverted U-shaped trend. Fifth, the importance of green finance sub-dimensions in relation to carbon emission efficacy is as follows: green support, green credit, green insurance, green investment, green equity, green bond, and green fund. These findings provide theoretical support for green finance's role in promoting co-carbon efficiency and are valuable for policy formulation.

The macroeconomic risk associated with climate change potentially results in a risk premium on asset prices. Using a sample of 11,468 Chinese quasi-municipal bonds from 2014-2021 in 267 cities, this research investigates the impact of climate risk on the credit spreads of quasi-municipal bonds. We employ principal component analysis (PCA) to construct a climate risk index and find that climate risk significantly increases credit spreads by increasing the local government fiscal gap and debt burden. The effect of climate risk is more remarkable for bonds that have shorter maturity and lower corporate ratings, issued by smaller city investment companies and corporations located in regions with stronger environmental regulation, stronger climate risk perception, and better green financial development. A significant relationship is also observed in the eastern regions but not the western regions. This study broadens the scope of quasi-municipal bond credit spread determinants from traditional financial to climate indicators.

There is increasing attention on information transfers along supply chain partners for firm (extreme) events. This growing literature finds spillover effects following certain types of firm events. Using data from credit rating actions of Chineselisted firms over the period between March 2007 and May 2020, we examine the spillover effects of supply chains by focusing on the market reactions of event firms to the action announcements. We find strong evidence of spillover effects driven by the market reactions of event firms, which are enhanced through information diffusion channels as supply chain partners receive more investor attention. Moreover, the effects are stronger when event firms’ market reactions are negative, event firms are nonstated-owned, the industry concentration of event firms is higher, or the suppliercustomer business relationship is closer. Overall, these findings highlight the role of investor attention in addition to network characteristics in supply chain spillovers.