In July 1987+0 1 day, the world population reached 5 billion; Two years later, in April of 1989, the population of Chinese mainland reached 1 1 billion. Therefore, in 1990, the United Nations decided to designate 1 1 in July every year as "World Population Day" on the recommendation of the 36th session of the Governing Council of the United Nations Development Programme.

As the most populous country in the world, China decided to designate June 1 1 the month before World Population Day as China Population Day.

June 2022 1 1 day is the 2022 Cultural and Natural Heritage Day.

Cultural and Natural Heritage Day originated from Cultural Heritage Day and is the second Saturday of June every year. It is one of the important themes of China's cultural construction, which embodies the great attention and strategic vision of the Party and the country to the protection of cultural heritage.

June 2022 1 1 is the 2022 Cultural and Natural Heritage Day, with the theme of "connecting modern life and blooming charming brilliance". China ranks first in the world in terms of the number of world natural heritage and natural and cultural dual heritage.