Informal institutions can play a crucial role in fostering corporate and policy innovation, especially when formal institutions are weak. However, their intangible nature makes them difficult to quantify. In this paper, we proxy the strength of kinship-based informal institutions using surname homogeneity among business owners, specifically, the extent to which they share a limited number of surnames within the same county. Our analysis reveals that a one-standard-deviation increase in the strength of informal institutions leads to a 21.1% increase in patent filings and an 18.9% increase in policy innovation. We find that kinship-related informal institutions foster corporate innovation by compensating for weak formal institutions, enhancing protection for intellectual property rights, facilitating access to finance, improving public service delivery, and promoting supply chain cooperation. We also suggest that kinship-related informal institutions encourage local governments to engage in policy experimentation, which relies on the collaboration of business owners. This experimentation process is easier to coordinate and monitor in counties dominated by a few kinship networks. Both informal institutions and policy innovation contribute to economic development and foster entrepreneurial market entries. However, the positive impact of informal institutions declines over time as formal institutions strengthen in China.

This paper examines the relationship between kin-based institutions and the state in the modern economy, exploring how clan captures the local government. Using data from China’s primary land market and a nationwide genealogy dataset, we employ spatial matching to estimate clan’s causal impacts on land parcel prices, which are a crucial source of fiscal revenue for local government. We find that firms linked to local clans obtained 1.3%-3.0% lower prices than those without clanship connections. We show that clan firms get lower prices through collusion with bidders, a process facilitated by local officials. This patron-client relationship leads to a decline in economic growth at the county level, while China’s anti-corruption campaign transforms the economic impact from negative to positive.

We investigate how social capital in both the home and host countries affects foreign direct investment in high tech firms. Difference in the social capital (trustworthiness) among provinces of the host country, China, is shown to matter in foreign companies’ choice of location, ownership type, and investment in R&D. We find that the provinces in China characterized by high levels of social capital attract more foreign investment. We also find that the likelihood of foreign investors establishing joint ventures with local partners increases with the level of social capital prevailing in that area. Foreign high tech firms conduct more R&D investment and hire more R&D personnel in high-social-capital provinces. Moreover, foreign-owned firms located in high-socialcapital areas keep improving their intensity of R&D investments over time. By contrast, in lowsocial- capital areas, foreign high tech firms do not improve and actually diminish their R&D intensity over time. We further show that the social capital in the country of origin (the home country) of a foreign company also affects its investment decisions in China. Cultural difference between the home country and the host country magnifies the foreign company’s weighing of the regional social capital difference in the host country; foreign companies from higher uncertainty avoidance home country prefer to invest in regions with higher social capital in the host country; on the other hand, kinship decreases the need to deal with strangers, and thus reduces the reliance on the provincial social capital.