If you search "china population" on jewtube you will find many videos where people question 1.4 billion population. They attribute it to pandemic loss and so on. Officially though no country questions 1.4 billion people, so i guess there has to be a "solution" to this long term. I could hypothesize that this solution could be "effect of trade war", in that china could blame usa that people starved to death in mass because of muh le evil usa tariffs.
That is, if they care about solution.
Example video -
https://www.youtube.com/watch?v=JpaT6wtD9fMEdit: The tariffs could be just a cover of population loss. The "elites" could just paint chinese manufacturing loss through the "trade war". USA will bring manufacturing back to home(or derivative), because they have to.