I agree with everything. By-elections for the Standing Committee are also required.

[1] On September 10, 1971, Zhou Enlai wrote to Mao Zedong, saying that before the Fourth
National People's Congress was held, there were several matters that needed his approval so
that preparations could begin: 1. Should the Third Plenary Session of the Ninth Central
Committee of the Party be held before National Day? 2. Should the Third Plenary Session be
used to announce the permanent expulsion of Chen Boda from the Party? 3. Should several
additional members of the Central Committee be elected at the Third Plenary Session? The
Third Plenary Session of the Ninth Central Committee of the Communist Party of China,
which was scheduled to be held at the time, was not held due to Lin Biao's treason and
escape on September 13.