Seeds are the "chip" of agriculture. Small seeds are connected with "the biggest one in the country". Innovation and change, overcoming difficulties, protection and utilization... On the land of China, biological breeders have been handed down from generation to generation, and biological breeding is as vigorous and robust as the seed from the ground. What is biological breeding? What is the development process of biological breeding in China? Wang Baobao, a researcher at the Institute of Biotechnology, Chinese Academy of Agricultural Sciences, answers the question online.