Legal analysis: Nanjing is one of the national 15 sub-provincial cities. The secretary of the CPC Municipal Committee, the director of the Standing Committee of the Municipal People's Congress, the mayor and the chairman of CPPCC in sub-provincial cities are all deputy ministerial-level cadres, not appointed by the provincial party committee, but directly appointed by the Central Organization Department. In other words, the mayor of Nanjing is a middle-ranking cadre at the deputy ministerial level.

Legal basis: Article 2 of the Administrative Regulations strengthens the Party's leadership and top-level planning. Administrative divisions should remain generally stable. If it must be changed, it should be based on the principles of being conducive to socialist modernization, promoting the modernization of the national governance system and governance capacity, administrative management, national unity and consolidating national defense. Adhere to the principles of adapting to the national development strategy and the level of economic and social development, paying attention to urban and rural overall planning and regional coordination, promoting the integration of urban and rural development, and promoting the harmonious development between man and nature, formulate change plans and report them to the examination and approval level by level. Major adjustments in administrative divisions should be reported to the CPC Central Committee in a timely manner.