It means that the applicant's academic level has been recognized by his peers.
National Outstanding Youth refers to those who have received funding from the National Outstanding Youth Fund project. It is an honor and has been recognized by peers.
The National Science Fund for Distinguished Young Scholars is a science fund specially established by China to promote the growth of young scientific and technical talents, encourage overseas scholars to return to work in China, and accelerate the cultivation of a group of outstanding academic leaders who will enter the forefront of world science and technology.