Chinese regulators summoned Didi, Geely’s Caocao, and nine other ride-hailing firms on Sept. 1, and accused them of vicious competition, illegal operations, and disrupting the market order.This is the latest action of the Chinese Communist Party’s multi-pronged crackdown on its tech companies, and the second summons after the regulators ordered 10 ride-hailing firms to set up an organization CCP members will lead on May 14.In recent months, Chinese regulators have launched new rules on online video games, tech companies who seek to list on foreign stock exchanges, cloud computing businesses, e-commerce companies, online financing businesses, education, celebrity fan clubs, Bitcoin,...