One year. Jieqing selection time is once a year, and the selection period is one year. The National Science Fund for Distinguished Young Scholars, referred to as Jieqing Fund, is selected once a year to support young scholars who have made outstanding achievements in basic research. Jieqing Fund has made great achievements in cultivating outstanding scientific research talents and improving China's scientific and technological level, and the recipients are an important part of China's high-level scientific and technological talents.