本文以 2009 2019 年公开发行的公司债与企业债为样本考察债券承销商与债券发行公司的空间临近性对债券 资成本、违约概率以及债券期限的影响。实证检验发现 当承销商与公司在同一省份或者承销商与公司距离更近时，债券融资成本越低；并且，承销商的声誉以及公司信息透明度会削弱承销商空间临近性对降低债券融资成本的作用；此外，我们还发现承销商与高和中等信用水平公司的空间临近增加了所发行债券的期限，与低信用水平公司的空间临近效果则相反；最后，我们发现承销商与公司的空间临近降低了债券违约概率。本文的发现在考虑内生性、地方政府关联程度以及排除一线城市的影响下依旧成立。

本文采用2000年到2017年中国A股上市公司的数据为样本，研究了流动性 共性与企业投资水平之间的关系。研究结果发现，个股的流动性共性显著降低了企业的投资 水平，经过一系列内生性和稳健性检验后该负相关关系依然不变。此外，基于信息不对称的 视角，从信息透明度、两权分离度和机构投资者持股三个方面对该负相关关系进行了深入检 验，经研究发现，信息越不透明、两权分离越大的企业，其流动性共性与企业投资水平的负 相关关系是增强的;而机构投资持股比例越高的企业该负相关关系是减弱的。最后，还发现 流动性共性与企业过度投资呈正相关关系。

我们对正式与非正式负债所产生的公司治理作用差异进行了比较分析。基于对中国民 营企业内的负债进行结构性区分，我们的实证研究发现，商业信用负债可以提升企业的投资 效率，而金融信用负债则会降低企业的投资效率。该结果说明，商业信用负债融资可以通过 给企业提供监督而发挥有效的公司治理作用，但金融信用负债融资却难以发挥应有的监督作 用，其债权人反而可能成为大股东利益侵占的对象。通过强化家族大股东对公司的控制力， 所有者管理可以促进商业信用负债融资更好地发挥其公司治理作用，但也可能会加剧大股东 对金融信用债权人的利益侵害。总体上看，债权人身份差异对应着差异化的公司治理作用。

本文研究了公司被并购对劳动力技术升级的影响。用中国上市公司 2000-2016 年的面板数据样本，在控制了公司相关变量以及年份和公司的固定 效应后，研究发现被并购后公司的劳动力总数、常规低技能劳动力数量、非常 规高技能劳动力数量均有增加，但是常规低技能劳动力占比显著减少，非常规 高技能劳动力占比显著增加。此外，公司中本科及以上学历的劳动力数量和比 例均有显著上升。在异质性分析中，研究发现并购对非国企比对国企对于劳动 力技术升级的影响更加显著，对高竞争行业中的公司对于劳动力技术升级的影 响同样更加显著。本文的结果在用工具变量解决了内生性后依然稳健。上述研 究结果表明，资本市场的并购活动对劳动力市场的技术升级有显著促进作用。

Peer-to-Peer lending platforms encourage borrowers to obtain various credit certificates for information disclosure. Using unique data from one of China's largest Peer-to-Peer platforms, we show that borrowers of lower credit quality obtain more certificates to boost their credit profiles, while higher-quality ones do not. Uninformed credulous lenders take these nearly costless certificates as a positive signal to guide their nvestments. Consequently, loans applied by borrowers with more credit certificates have higher funding success but worse repayment performance. Overall, we document credit certificates fail to accurately signal borrowers' qualities due to adverse selection, resulting in distorted credit allocation and investment inefficiency.

This paper examines the relationship between the large-scale construction of broadband infrastructure and digital financial inclusion in rural China. To make causal inferences, we exploit a quasi-natural experiment and use a difference-in-differences identification strategy with panel dataset of Chinese counties from 2014 to 2018. The results show that broadband infrastructure significantly contributes to digital inclusion. Further, we distinguish between two dimensions of digital inclusion, namely, the coverage and the usage. We find that while broadband infrastructure significantly promotes the coverage dimension, its effect on the usage dimension is limited. Besides, the effects of broadband infrastructure on digital inclusion, and in particular on the usage dimension, are larger in areas with higher levels of human capital, higher levels of social capital, and higher penetrations of bank branches. Taking into account those moderators is important to fully harness the potential of broadband infrastructure on financial inclusion.

本文以2005-2015年中国A股上市公司的数据为研究样本，探究了股价崩盘风险与公司银行贷款和现金政策的关系。研究发现，股价崩盘风险越高，公司所能获得的银行贷款规模越小、成本越高；与此同时，股价崩盘风险高的公司会选择更高的现金持有水平，相应的，现金持有的边际价值和现金-现金流敏感性也更高，上述结论在经过稳健性检验后依然成立；进一步的，股价崩盘风险与公司现金持有、现金持有边际价值和现金-现金流敏感性的正相关关系在信息不对称程度和外部资金依赖程度高的公司中更加显著。研究表明，股价崩盘作为信息不对称背景下公司隐藏负面信息的极端后果，银行一定程度上能够识别并在信贷决策上进行调整，而公司在外部融资渠道受阻的情况下会更加依赖内部融资，基于现金的预防性动机，选择更高的现金持有水平。本文不仅从融资决策的角度探讨了股价崩盘风险的经济后果及其可能的影响机制，同样拓展并丰富了银行信贷机制和公司流动性管理的相关

In this paper, using news reports and stock trading data from China, we document that stocks covered by the same media platform tend to comove together and refer to it as media-driven comovement. This finding remains significant both by conducting time series regressions of individual stock returns on co-coverage portfolio returns and by calculating the Pearson correlations among stocks that are co-covered by the same media platform. This is a novel type of comovement since it cannot be fully explained by common factors (e.g., additions to market indices) that lead to comovement but accords well with the investment habitat view. Besides, we find no statistically significant relationship between the frequency of co-coverage and the magnitude of comovement. To better illustrate the economic significance of this media-driven comovement, we construct a trading strategy which earns a monthly return of 115 basis point.

This paper examines the impact of air pollution on media slant of public listed firms in China. Using air quality and media data at the city level, we find that lower air quality generally leads to lower media slant. When the air quality changes from lightly polluted to heavily polluted, the number of negative sentences increases by about 2%. Our subsample analysis shows that the effect of air pollution on media slant is similar for large and small firms but is stronger for non-SOE firms. Furthermore, the effect of air pollution on media slant is stronger for firms of non-heavily polluted industry than for firms in heavily polluted industries. These results suggest that air pollution affects media slant.

Skewness preference, the tendency to overweight the probability of extreme tail events, can affect managerial decision making. We find that Chinese listed firms managed by CEOs who experienced a largely unpredictable rare event, namely the outbreak of Severe Acute Respiratory Syndrome (SARS) in 2003, during their earlier executive careers have lower stock price crash risk measured by negative skewness. This effect especially matters for CEOs whose experienced events are more salient. Furthermore, professional epidemic experience induces CEOs to deter stock price crashes through altering financial reporting strategies. Overall, entrepreneurs’ skewness preference can reduce the negative skewness of stock returns.