Mean Height of 19yo Males in Select Countries, 1985-2019

https://sopuli.xyz/post/43074295

What is happening in China?
Improved health conditions. The start of the curve is around '91, and given this graph is for 19yos it’s probably some change around '72. I don’t know which change.
Better diet, mostly.

Possible, but “better diet” on its own should apply to all five.

Another interesting bit in that pic is India. It was in a rather steep curve up from before '85 to ~'92[?]. Then it dropped, stagnated, started climbing back.