An alert reader pointed me to this Bloomberg article on ageism in the Chinese tech sector. I’ve observed it myself, in the experience of a relative and her husband.
But the article incorrect in saying that the problem is even worse in China than in the U.S. Wrong! It’s just as bad in the U.S.; note that they even set 35 as the cutoff point (though some lower numbers are mentioned too), just like I do for the U.S. The U.S. firms are better at hiding it, that’s all.
One difference is that in the U.S. the primary motivation is cost savings, while in China it is a misguided notion that only young new graduates know the Latest and Greatest technologies. (U.S. companies make statements like that too, but it is mainly an excuse.)