Remember they're not all like that.
It's the same as saying all Brits are loud fighting drunks, just because of what you see in Benidorm pubs... Parts of Thailand are like Benidorm for the Chinese. Not too far and cheap and it attracts a certain type.
There is a reason the CCP are trying to educate their citizens with leaflets at airports before they travel as it's embarrassing for the whole nation.
Unfortunately, not many seem to take notice yet.