China is working on new regulations to prohibit internet companies with huge volumes of sensitive consumer data from going public outside of the country, including in the United States—a move that is likely to jeopardise the Chinese tech firms’ plans to list abroad. Last month, Beijing announced plans to strengthen oversight of all companies listed offshore, a major regulatory shift that followed a cybersecurity investigation into ride-hailing giant Didi Global Inc just days after the Chinese company debuted on the New York Stock Exchange in June. The new laws are likely to aid Beijing in exerting greater control over the...