The US Treasury Department added eight more Chinese companies to an investment blacklist on December 17, 2021, for alleged involvement in the surveillance of Muslim minority people in the Xinjiang Uygur autonomous region. The world’s top commercial drone maker DJI Technology and artificial intelligence (AI) giant Megvii were among the companies, meaning US investors will be barred from buying or selling their shares. The move came a day after dozens of Chinese companies were added to Washington…