(First month 23 Dingmao,), February 20, 1987, China was a major breakthrough in superconductor research.

1987 20, 2009, the Institute of Physics, Zhao Zhongxian 13 researchers first discovered the onset temperature at 100K (K is the absolute temperature, 0K -273 �� C, 100K -173 �� C superconductors) above, to make our country once again a world leader in the field of low-temperature superconducting materials.