When did China begin to introduce cows?

He may be the first person to introduce cows to China. I watched a program on CCTV before, which was about a Chinese military officer in a scientific research institute. He immigrated to the United States and has been engaged in the research of human embryonic stem cells in the United States. He has always accepted the superior conditions of the United States, made good use of resources, and creatively proposed to reproduce human organs with the help of animal embryos. As it was 1 year ago, I can't remember it clearly. His name has the word "Xiang", and the vague impression is that his name is money. But these materials can't be found in the interview columns of Baidu and CCTV. I mentioned him because he was the first person from China in China who took the genes of high-quality cow seeds privately in the United States and brought them back to China to clone a new generation of high-quality cows. Traditional dairy cows in China suffer from nipple disease, and the milk yield has not been high. Under the obstruction of the United States, they resolutely returned to China, which shows how hot his China heart is. I learned from that interview last year that he had cancer, so I wanted to bring important knowledge back to my country at the last moment of my life. I hate that I can't remember his name now. I hope the landlord will tell me when he knows the name.