Constitution of the Republic of China (Taiwan) Article 28

Delegates to the National Assembly shall be elected every six years.The term of office of the delegates to each National Assembly shall terminate on the day on which the next National Assembly convenes.No incumbent government official shall, in the electoral area where he holds office, be elected delegate to the National Assembly.
中文原文 中華民國憲法第28條
國民大會代表每六年改選一次。
每屆國民大會代表之任期至次屆國民大會開會之日為止。
現任官吏不得於其任所所在地之選舉區當選為國民大會代表。

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