How about Cheng Ning’s Huku crucian carp buoy?

I think it’s very good. Cheng Ning is a buoy expert. The Huku crucian carp buoy he made is very sensitive. If any fish eats the hook, it will be reflected on the buoy. Moreover, his buoy is resistant to current and water leakage. It can also be used for fishing in very powerful situations. Teacher Cheng Ning is the founder of the fishing lecture TV program, an advocate of Chinese competitive fishing, a writer of competitive crucian carp fishing methods, a buoy expert, the winner of the 4th National Fishing King Cup Finals, and enjoys the title of 98 Fishing King.