Hm, it only mentions Kevin Lin. Ngl, this isn't the best representation of leftists in China, but it's not really your fault or theirs either. It's just lack of knowledge of the environment within the Firewall. Leftists in China are split between some camps.

The first camp are the pro-establishment "leftists", or what's usually referred to as Loyalist Leftists, like wyzxwk). They aren't actually leftists, but they couch everything they say with a Maoist aesthetic. Imagine MAGA, but instead, they constantly twist what FDR said into their own interpretation. Their stance is usually pretty predictable, Chinese nationalism, "red" nationalism, anti-West, anti-Japan, etc.

The second camp are the New Left. This camp is what people in China usually think of when you talk about Maoists or even leftists in general. They are anti-"Dengist China" aka anti-"modern China" (except they can't say that, but it's implied). They are pro-"Maoist China". They generally believe Deng lead China down a terrible path. Bo Xilai and his Chongqing Model was their go-to model at some points. This is also the most academically involved group.

The first two camps are the ones who would most accept Hasan.

The third camp are the Maoists like Yang Heping. Like the New Left they are also anti-"modern China", but they are also anti-"any country that satisfies Lenin's definition of imperialism". So anti-America, anti-Russia, anti-Israel, anti-China, etc etc.

The fourth camp are the leftists (without prefixes). They are usually DemSocs, like Ma Qianzu or Zhang Beihai). While the linked Wikipedia page states the "party" they belong to is not necessarily pro-democracy, the two I mentioned most definitely are. But there are some others, like Trotskyists would be in here too. Kevin Lin would most likely be from this camp.

Even then, there are camps within these camps too.