I highly doubt GDP numbers in China are falsified, but GDP per capita doesn't matter much when median household incomes in China remain in the $250-350/mo (EDIT: $400-500/mo, good callout, needed to update priors from covid) range according to Chinese government statistics.

This is why Chinese overproduction exists - incomes are too low for most Chinese consumers to purchase higher value goods that are made in China, because you aren't upgrading your cellphone or car every year when your household income is in that range.