Ask an American patent, is there a patent of the same subject in China?

The so-called patent of the same family refers to the patent of an invention applied in many different countries or regions. This kind of patent is called family patent or family patent. Generally, if there is a priority claim, there will be information about the patent for which priority is claimed in the patent for which priority is claimed, so these two patents belong to the same family. If there is no claim for priority, because it is relatively independent in various countries or regions, generally speaking, it will not indicate which patents belong to the same family. In this case, it is necessary to search by patentee and keyword on patent search websites in various countries. Because it is a family patent, the key words of the invention point must be the same, so it is easy to find.