Chen, party boss of the southwestern metropolis of Chongqing, is regarded as a steady technocrat and has often espoused Xi's ideologies and policies in public.
A native of Zhejiang province in eastern China, Chen spent close to three decades there before being promoted to deputy party secretary in Guizhou province in 2012.
In 2017, Chen was parachuted into the more politically challenging position of Chongqing party chief, a clean-up task after the sudden dismissal of Sun Zhengcai in a corruption scandal.
Shanghai Party Secretary Li Qiang, another contender for promotion, was also in the group.
In Zhejiang, Chen worked as chief editor of the party's main local media organ, the Zhejiang Daily, rising to become propaganda chief for the province.