A girl learns about garbage sorting rules during a waste management awareness campaign at a residential community in Dongcheng District of Beijing, capital of China, May 23, 2020. Beijing began to carry out mandatory garbage sorting on May 1 in new efforts to protect the environment. With the city's newly revised household waste regulation taking effect, Beijing requires people to classify household waste into four categories: kitchen, recyclable, hazardous and other waste.  [Photo by Peng Ziyang/Xinhua]

Two children play an educational garbage sorting game during a waste management awareness campaign at a residential community in Dongcheng District of Beijing, capital of China, May 23, 2020. Beijing began to carry out mandatory garbage sorting on May 1 in new efforts to protect the environment. With the city's newly revised household waste regulation taking effect, Beijing requires people to classify household waste into four categories: kitchen, recyclable, hazardous and other waste. [Photo by Peng Ziyang/Xinhua]

Two children learn about garbage sorting rules during a waste management awareness campaign at a residential community in Dongcheng District of Beijing, capital of China, May 23, 2020. Beijing began to carry out mandatory garbage sorting on May 1 in new efforts to protect the environment. With the city's newly revised household waste regulation taking effect, Beijing requires people to classify household waste into four categories: kitchen, recyclable, hazardous and other waste. [Photo by Peng Ziyang/Xinhua]