Legal basis: Article 47 of the Company Law of People's Republic of China (PRC), the meeting of the board of directors shall be convened and presided over by the chairman; If the chairman is unable to perform his duties or fails to perform his duties, it shall be convened and presided over by the vice chairman; If the vice chairman is unable to perform his duties or fails to perform his duties, it shall be convened and presided over by more than half of the directors.