China’s tech giants are rushing to answer President Xi Jinping’s call to contribute to the country’s “common prosperity” amid a crackdown on the sector that has left companies reeling and entrepreneurs keeping a low profile. In August, Xi called on companies to help pursue the goal by “adjusting” high incomes and encouraging wealthy individuals and companies to “give back to society”. China’s tech entrepreneurs, whose net worths have ballooned in the past decade, were quick to respond. Wang Xing, the founder of food delivery giant Meituan who has a net worth of US$20 billion, said during the company’s second-quarter earnings…