What are the most fundamental inner-party regulations? The whole party must strictly abide by it.

Party constitution is the most fundamental inner-party regulation, and the whole party must strictly abide by it.

Party constitution is the most fundamental inner-party regulation, and it is a constitution formulated by political parties to ensure the unity of the whole party politically, ideologically, organizationally and practically. It has a binding effect on members of the party, and its nature is like the "constitution" of the country, which requires the whole party to strictly abide by it. In this sense, those who violate party rules and regulations must be dealt with severely. Therefore, "the Central Committee of the Communist Party of China's Decision on Comprehensively Advancing Several Major Issues of Governing the Country by Law" calls for improving the system and mechanism of making inner-party laws and regulations, intensifying the examination and interpretation of inner-party laws and regulations, and forming a complete inner-party legal system. Pay attention to the cohesion and coordination between the party's internal laws and regulations and the national laws, improve the implementation methods of the party's internal laws and regulations, apply the party's internal laws and regulations to implement the management of the party and strictly manage the party, and promote party member cadres to take the lead in observing the national laws and regulations.