EAST contributions to closing CFETR physics gaps

Gaps remain in physics and engineering for CFETR design. This report will focus on the high performance long pulse/steady-state operation and the power exhausting issues. The possible operation windows for designed CFETR plasma to achieve its goal and related challenge are presented. Another part of this report is to summarize the endeavors on EAST experiment, which could possibly address the solutions to the critical issues above for future fusion reactors. Advances on EAST scenario development and divertor heat flux control are presented.