Why did hybrid rice give intellectual property to the United States?

Variety rights, patented technology and the rules of the game of transgenic technology are all formulated by developed countries in Europe and America. When our country is not familiar with these rules of the game, we are in a hurry to export. I think one thing is vanity. China is a vast country, so it should undertake the obligation of internationalism? ! Secondly, it is not a small supplement to spend millions. Of course, in the current situation that advanced capitalist countries are under siege, we should be cautious in exporting advanced hybrid rice technology.