legal ground
Article 108 of People's Republic of China (PRC) Company Law A joint stock limited company shall have a board of directors with five to nineteen members. Members of the board of directors may include company employee representatives. The employee representatives in the board of directors are elected by the employees of the company through employee congresses, employee congresses or other forms of democratic elections. Article 109 The board of directors shall have a chairman and may have a vice-chairman. The chairman and vice-chairman are elected by the board of directors by more than half of all directors. The chairman shall convene and preside over the meeting of the board of directors and check the implementation of the resolutions of the board of directors. The vice chairman assists the chairman. If the chairman is unable to perform his duties or fails to perform his duties, the vice chairman shall perform his duties; If the vice chairman is unable to perform his duties or fails to perform his duties, more than half of the directors shall recommend a director to perform his duties on his behalf.
skill
The above answer is only for the current information combined with my understanding of the law, please refer carefully!
If you still have questions about this issue, I suggest you sort out relevant information and communicate with professionals in detail.