I think a lot of people simply cannot wrap their head when they view from the Western angle. As a result, they sometime just fixate on some main-stream idea without realizing that those views are from limited exposure to the ground.
It's true that China has not produced much other attractions than 3body and tiktok, even 3body is heavily influened by US SF writing, and tiktok is originally produced in US by musically. The point is that these productions are easier to be accepted by the Western socieity, because they themselves are linagage from the western tradition, with a more tainted cultural identity than the indigenous stuff.
In reality, China have produced enourmouse amount of culturally diverse and innovative work for the domestic audiance. https://www.youtube.com/watch?v=kWdkAyt9Q2A I'll give you one example of a recent production of a Cantonese opera mixed with modern filming tech of the classic Bai She Zhuan. And Pop star signing Song Dynasty Chi https://www.youtube.com/watch?v=0t9VT9Dwiqg.
Of course, these color productions are very distant from the Western cultural heritage, and people from the West simply cannot appreciate their wonderfullness and depth.