BEIJING (AP) — The coronavirus came first to Beijing in the depths of winter. As with so many places afterward, the change seeped in gradually. Neighborhoods sealed themselves off with makeshift barriers. Apartment blocks issued identification cards. Staff at a nearby grocer donned goggles and rubber gloves over custom grey hazmat suits Authorities issued new orders, and they gradually limiting travel into and out of China. Flights were cancelled. Then, at some point, the sun shone through the grey. Spring slowly warmed the city.