China- A Small Tornado over the Sea

It sounds like you might be referring to a specific event or phenomenon. Tornadoes over the sea are generally called "waterspouts." Waterspouts are similar to tornadoes but form over water and are often less intense.

If you're referring to a particular incident in China involving a waterspout or a tornado, could you provide more details? If it's about a recent news event or a historical occurrence, I’d be happy to help with more context or information!