External shocks

  • 详情 Determinants of Firm Survival Using Machine Learning: Evidence from the Pearl River Delta, China
    Firm survival, as a key indicator of regional economic resilience, has gained increasing attention in the context of global economic uncertainty and the deep adjustments in industrial structures. In the Pearl River Delta (PRD), a core region of China’s Guangdong-Hong Kong-Macau Greater Bay Area, the characteristics of firm life cycles are crucial for understanding spatial development inequalities and institutional effects in emerging economies. This study focuses on firms in the PRD, using full life-cycle data from registration, operation, to deregistration. An XGBoost regression model is employed, incorporating the SHAP explanation algorithm, to systematically analyze the main factors influencing firm survival. The results show that: (1) Firm establishment time is the primary factor influencing survival, with significant “survival threshold” and “growth leap” effects—mature firms exhibit a distinct survival advantage; (2) Among spatial structure variables, moderate industry specialization and diversity enhance firm survival rates, while excessive concentration and diversification show diminishing or negative returns, reflecting an “ecological threshold” effect; (3) External shocks have a significant suppressive impact on startups, while policy support and capital size show limited explanatory power; (4) The ownership structure, especially state-holding, has a positive moderating effect on firm survival in specific contexts, indicating that private enterprises’ flexibility and adaptability can compensate for institutional gaps. This study offers insights into the spatial heterogeneity of firm survival mechanisms, providing quantitative evidence for regional economic policy adjustments and firm resilience-building. Recommendations include promoting differentiated policies, optimizing industrial ecological spatial layouts, and piloting systems to enhance survival resilience, especially for mixed-ownership firms.
  • 详情 Understanding Crude Oil Risk in China: The Role of a Model-Free Volatility Index
    We construct the China Crude Oil Volatility Index (CNOVX)—the first model-free, optionimplied measure of forward-looking oil price risk for China—using INE crude oil options from 2021 to 2024 and an adapted CBOE methodology that accounts for sparse strike availability via smooth interpolation and extrapolation. Our results show that CNOVX increases with trading activity in the futures market, declines with option volume, and is strongly predicted by the 30-day realized variance of the SC crude oil futures contract. External shocks, including the Russia–Ukraine conflict and the Geopolitical Risk Index, significantly elevate CNOVX levels. During the COVID-19 pandemic, mortality risk intensifies the volatility-amplifying role of futures trading and strengthens the volatility-dampening effect of options, while confirmed case counts have weaker influence. We further document a pronounced asymmetric leverage effect: negative futures returns raise CNOVX more than positive returns of equal size. However, volatility feedback effects are negligible, as changes in implied volatility respond primarily to contemporaneous market conditions. Overall, CNOVX serves as a timely and informative benchmark for monitoring risk in China’s evolving crude oil derivatives market, with valuable implications for investors, hedgers, and policymakers.
  • 详情 Sourcing Market Switching: Firm-Level Evidence from China
    Facing external shocks, maintaining and stabilizing imports is a major practical issue for many developing countries. We first document that sourcing market switching (SMS) is widespread for Chinese firms (For 2000-2016, SMS firms account for 76.29% of all import firms and 96.30% of total import value). Then we use Chinese firm-level data to show that SMS can significantly mitigate the negative impacts of international uncertainty on imports, which further stabilizes firm employment and innovation, leading to increases in national and even world welfare. Possible motivations for SMS include stabilizing import supply, lowering import tariffs, raising the real exchange rate, and increasing product switching. We also find that the effects of SMS vary by the type of uncertainty, firm ownership, productivity, credit constraints, trade mode, and product features.
  • 详情 Institutions and Social Attitudes: The Origin and Impact of State Ownership Preferences in China
    This study examines the enduring effects of China’s planned economy on contemporary social attitudes. By leveraging spatial disparities in the historical distribution of state-owned enterprises and external shocks such as the First Five-Year Plan and the Third Front Construction movement, we find that a one percentage point increase in the historical SOE proportion of industrial output corresponds with a 0.57% to 0.89% increase in the contemporary preference for state-owned sectors. The results are robust after controlling the contemporary SOE employment share, and this effect does not apply to the younger generation born after the marketization reform. Furthermore, we provide evidence that city-level state ownership preferences significantly impact the likelihood of SOEs receiving subsidies, with this effect notably amplified in cities governed by locally-born leaders, but the share of locally-born leaders has been trending down.
  • 详情 Heterogeneous Shock Experiences, Precautionary Saving and Scarred Consumption
    This paper represents the first attempt to show how heterogeneous shock experiences help explain the enduring scars on household future behaviors. Using a large-scale household survey with 15,652 observations combined with geospatial transportation big data, we identify a novel belief-updating mechanism through which crises may exert prolonged impacts on household asset allocation and consumption patterns. An increase in the duration of previous lockdown experience is associated with a 10.52% escalation in enhanced anxiety for future precautionary saving motivations. This experience-based learning perspective supports the resolution of long-lasting overreactions to negative shocks via belief revisions and extends to households’ consumption behaviors. The lingering effects continue to skew households' beliefs even when conditions improve. Additionally, households with different individual-based shock experiences may exhibit varying perceptions of external shocks, resulting in disparate belief revision processes.
  • 详情 The Effect of the China Connect
    We analyze the effects on Chinese firms of the "China Connect" equity market liberalization. Because China is a capital abundant country, unlike typical emerging markets in the literature, the benefits and costs of liberalization are logically different. Nonetheless, the liberalization brought benefits: lower funding costs, higher stock prices, and more investment for connected firms compared to unconnected firms, despite a common negative effect on all firms from capital outflows. These benefits come from a new channel: reducing domestic credit misallocation between private- and state-owned enterprises. We also document costs: connected firms became more sensitive to external shocks than unconnected firms.
  • 详情 Spillovers of the U.S. Subprime Financial Turmoil to Mainland China and Hong Kong Sar: Evidence from Stock Markets
    This paper focuses on evidence from stock markets as it investigates the spillovers from the United States to mainland China and Hong Kong SAR during the subprime crisis. Using both univariate and multivariate GARCH models, this paper finds that China's stock market is not immune to the financial crisis, as evidenced by the price and volatility spillovers from the United States. In addition, HK's equity returns have exhibited more significant price and volatility spillovers from the United States than China's returns, and past volatility shocks in the United States have a more persistent effect on future volatility in HK than in China, reflecting HK's role as an international financial center. Moreover, the impact of the volatility from the United States on China's stock markets has been more persistent than that from HK, due mainly to the United States as the origin of the subprime crisis. Finally, as expected, the conditional correlation between China and HK has outweighed their conditional correlations with the United States, echoing increasing financial integration between China and HK.
  • 详情 Assessing the Vulnerability of Emerging Asia to External Demand Shocks: The Role of China
    he paper assesses the vulnerability of China to external shocks via the indirect negative effect of a slow-down in exports on domestic demand for investment. In the last decade China has increased its dependence on external demand, particularly from the advanced countries; at the same time it has become a primary destination market for goods produced in the rest of emerging Asia. Since 2001 investment expenditures have represented a key driver of Chinese GDP growth; as a very large share of activity in the manufacturing sector is export oriented, we expect fixed capital investment in this sector to be highly related to exports. Overcoming serious shortcomings in available data, we estimate an investment equation for the period 1993-2006 and find an elasticity of investment to exports in the manufacturing sector in the range between 0.9 and 1. Taking into account the dominant contribution of capital accumulation to Chinese GDP growth, we conclude that the growth effects of an external demand shock could become significant when taking into account the domestic investment channel.