31 years ago today, on May 3, 1994 (March 23, 1994, the world's first genetically modified rice was introduced in Hefei City, Anhui Province. On May 3, 1994, the world's first genetically modified rice was introduced in Hefei City, Anhui Province. This was developed by scientific researchers at the Institute of Plasma Physics, Hefei Branch, China Academy of Sciences, using the institute's internationally first ion beam-mediated method and joint research with the Anhui Province Academy of Agricultural Sciences for many years. Tests have proved that its foreign gene is inherited in future generations. This major breakthrough has opened up a new path for directional breeding. Experts said that achieving targeted genetic improvement of species through targeted gene transfer is a popular high-tech field in life science research today. The Institute of Plasma Physics of the Chinese Academy of Sciences is one of the main units in thermonuclear fusion and related plasma physics research in my country. Researchers at this institute took the lead in proposing ion beam biological breeding methods internationally in the early 1980s and achieved a series of results. The scope of research has expanded to grain, cotton and microorganisms and many other aspects. Genetically modified rice is a research project carried out by doctoral students of this institute under the careful guidance of their supervisors Xu Zhihong, Yu Zengliang, Wu Jiadao and others. They used a low-energy ion beam to punch holes in the seeds, penetrate the seed skin and cell walls, and then integrated the selected gene fragments with known genetic characteristics into the genome of the seed cells using the ion beam, thereby making The seed has certain genetic characteristics already existing in the transferred material. The genetically modified rice they bred was tested at the molecular level and tested by various methods, and it was proved that the foreign gene did exist in the tested rice gene, and the trait could be inherited. It is understood that developed countries such as Japan and Australia have begun large-scale research on ion beam breeding.