https://www.reuters.com/article/us-china-regulation-cac/chinas-powerful-internet-regulator-flexes-muscles-with-didi-probe-idUSKCN2EE106 >China's internet watchdog, which stunned investors with an investigation into Didi Global two days after the ride-hailing giant's New York stock market debut, has come to the forefront of Beijing's sweeping efforts to rein in its tech sector and enforce tightening data security efforts.