Regulations for Academia Sinica Council Meetings Article 7

A motion should be approved by the majority of Council Members present in order to pass as a resolution.In the event of a tie vote, the Chairperson may cast the deciding vote.
中文原文 中央研究院評議會會議規則第7條
議案之通過,應有出席評議員過半數之決議。
議案表決可否同數時,主席得投票決定之。

English translation for reference only; the Chinese text prevails. Not legal advice.