On this day, 27 years ago, on April 7, 1998 (March 11, 1998 in the lunar calendar), the China Academy of Sciences officially launched the senior visiting scholar system in Beijing. On April 7, 1998, China Academy of Sciences officially launched the senior visiting scholar system in Beijing. Since 1988, outstanding domestic and foreign scientific researchers have been invited to "join" the Academy of Sciences for short-term cooperative research to promote the development of China's scientific and technological undertakings.