Constitution of the Republic of China (Taiwan) Article 29
The National Assembly shall be convoked by the President to meet 90 days prior to the date of expiration of each presidential term.
中文原文 中華民國憲法第29條
國民大會於每屆總統任滿前九十日集會，由總統召集之。
English translation for reference only; the Chinese text prevails. Not legal advice.