Chefs look at their phones during a break in Beijing, capital of China, March 12, 2019. (Xinhua/Lan Hongguang)

Staff members tidy after the conclusion of the second session of the 13th National People's Congress (NPC) at the Great Hall of the People in Beijing, capital of China, March 15, 2019. (Xinhua/Lan Hongguang)

A staff member tidies after the conclusion of the second session of the 13th National People's Congress (NPC) at the Great Hall of the People in Beijing, capital of China, March 15, 2019. (Xinhua/Lan Hongguang)

Staff members tidy after the conclusion of the second session of the 13th National People's Congress (NPC) at the Great Hall of the People in Beijing, capital of China, March 15, 2019. (Xinhua/Lan Hongguang)

Tourists ride a bike at Beijing Wild Duck Lake National Wetland Park in Beijing, capital of China, March 17, 2019. (Xinhua/Wang Jianhua)

A man flies a kite at Beijing Wild Duck Lake National Wetland Park in Beijing, capital of China, March 17, 2019. (Xinhua/Wang Jianhua)