2021-02-22 06:36:27 GMT2021-02-22 14:36:27(Beijing Time) Xinhua English People wait for takeout service outside a restaurant on a business street in San Mateo, California, the United States, Feb. 21, 2021. San Mateo City sits in San Mateo County where the purple tier, or the strictest control in California, is still in effect. Business activities are prohibited or subject to stringent limits, and restaurants are only allowed to provide services of outdoor dining or takeout. (Xinhua/Wu Xiaoling) A police officer is on duty at a railway station in San Mateo, California, the United States, Feb. 21, 2021. San Mateo City sits in San Mateo County where the purple tier, or the strictest control in California, is still in effect. Business activities are prohibited or subject to stringent limits, and restaurants are only allowed to provide services of outdoor dining or takeout. (Xinhua/Wu Xiaoling)