True. But we also know that:
1) Chinese businesses are heavily influenced by the Chinese government (and in many cases at least partially owned by the government).
2) The Chinese government has a propensity to lie about a great many things (even more than the average government, which is already not overly trustworthy).
Ergo, it stands to reason that their numbers may be an outright lie, not because of their ethnicity or race, but because of influence from the Chinese government.
I read that comment as "They're [being heavily influenced by the] Chinese [government] and they're lying." I can't say for sure that was the intent, but with all the industrial espionage and similar issues coming from China (and likely attributable to the Chinese government) it would make sense.