Yeah, this happens on Slash too, so apparently the Chinese astroturfing squad seems to lurk here as well. For example, in regards to cheating exams:
You have this guy mentioning that cheating test scores is also a big problem in China, followed by some more detailed posts as to why.
Then you have a response by an AC who basically says "oh it's just Westerners trying to make China look bad. We don't do that anymore! Look, I'm in the US now so I'm believable. Despite posting AC and having stereotypical Chinese grammatical mistakes common to non-landed Chinese astroturfers, modded +1
I point out that the previous response is an obvious astroturfer (aforementioned grammatical errors etc), and am modded down twice rather readily. But seriously, read the astroturfer's post out with a bad accent and it will sound like a Chinese villain from an old movie. The linguistic keys make it pretty clear the guy isn't somebody who's been living in the west for any length of time.
For the record, I have plenty of Chinese friends etc whom I've worked on language skills with. Missing pronouns is usually a fairly basic thing that gets fixed earlier on, as is the use of infinite verbs ("keep to spread" instead of "spreading"). So unless the poster had been living in Chinatown for the last few years, one would expect those language'isms to have cleared up by now.
Also, "flied lice", though attributed to a Chinese restaurateur in Lethal Weapon and added for humour, would be more of a Japanese/Korean language issue as they lack distinct "L" and "R" sounds in their language (or rather, "L" and "R" exist as single character/sound). Chinese don't really seem to have issues with consonant swaps in English.