If your invention has Chinese market potential and you think that another company could make profits from your invention, you need protection from a patent.
A patent gives you the right to exclude others from making your product.
As a patent gives exclusivity, the patent holder has time to market the invention without competition making him/her able to charge higher prices.
It gives the right to initiate legal action against anyone that is making or selling, without permission, the patent holder invention.
You can make money by licensing or selling your invention to someone else.