How did the chairman of a joint stock limited company come into being?

Legal analysis: the chairman is elected by the board of directors with more than half of all directors.

Legal basis: Article 109 of the Company Law of People's Republic of China (PRC) has 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.