During the One Child Policy (一胎政策) which finished in 2015, the Chinese government tried to persuade the population not to discriminate against having female children. Unfortunately, the campaign was not successful and has resulted in there being far more males than females in China. Traditional families, especially in the countryside chose to have a male child over a female child.
This is a government propaganda sign in Rural China (Bakai, Rongjiang, Guizhou Province) reminding the local population that males and females are equal.
However, due the gender imbalance, the government is now asking women to lower their aspirations and be less picky when choosing a male partner for life.
There is still a lot of work to do.