BEIJING (AP) — China is imposing lockdowns and ordering mass testing in cities along its east coast amid the latest surge in COVID-19 cases. Checks have been set up in toll stations around the city of Putian in Fujian province, with a dozen of them closed entirely. The nearby cities of Xiamen and Quanzhou have also restricted travel as the delta variant spreads through the region. The National Health Commission on Wednesday said an additional 50 cases had been diagnosed, most of them in the Putian region. Since the start of the pandemic, first detected in Wuhan, China has imposed strict testing, lockdowns and quarantines. A suspected case in eastern Beijing prompted officials to bar residents of a high-rise community from leaving their apartments.