The uploaded website setting is that the size cannot exceed 3m.

The types of projects that will receive applications intensively in 2021 include: general projects, key projects, some major research plan projects, Youth Science Fund projects, Outstanding Youth Science Fund projects, National Science Fund for Distinguished Young Scholars, and innovative research Group projects, basic science center projects, regional science fund projects, some joint fund projects, major national scientific research instrument development projects (free application), mathematics Tianyuan Fund projects, key international (regional) cooperative research projects, etc.