WOW. When the app popped up your comment, I saw the first sentence and I tried to guess which of my comments it was a response to. Then I went like “no way”.
No matter how hard you try to come up with some surrealist bullshit, chances are someone had thought of the same and went like “this is a great idea”.
I’m not an expert Chinologist, and it’s a huge country, so it might vary, but AFAIK tipping isn’t really a thing in China.