The opening of high-speed rail (HSR), as an exogenous shock, has had a profound and complex effect on social life. This study analyzes the effect of the opening of HSR on social trust. Results show that the opening of HSR promotes social trust. Mechanism analysis showed that although the opening of HSR accelerated population mobility and decreased trust in strangers, economic growth and improvement of local social issues mitigated the negative effects of its opening. In addition, our results also show that individuals turn to trust in their parents, neighbors, and doctors. Considering the potential endogeneity problem, instrumental variable and difference-in-differences estimators consistently indicated the promoting effect of the HSR opening on trust. Heterogeneity analysis showed that the opening of HSR had a greater effect on female, urban residents, younger groups, and married people. Last, cities with larger populations and tourist cities were more vulnerable to shocks.

中文翻译：

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高铁的文化冲击：来自社会信任的证据

高铁开通作为一种外源性冲击，对社会生活产生了深刻而复杂的影响。本研究分析了高铁开通对社会信任的影响。结果表明，高铁开通促进了社会信任。机制分析表明，虽然高铁开通加速了人口流动、降低了对陌生人的信任度，但经济增长和当地社会问题的改善缓解了高铁开通带来的负面影响。此外，我们的结果还表明，人们开始信任他们的父母、邻居和医生。考虑到潜在的内生性问题，工具变量和双重差分估计一致表明高铁开放对信任有促进作用。异质性分析显示，高铁开通对女性、城镇居民、年轻群体、已婚人群影响较大。最后，人口较多的城市和旅游城市更容易受到冲击。