反分裂國家法
He supported the localization policies of the Chen Shui-bian administration. In 2005, he urged the Ministry of Education to get rid of contexts of "aboveboard Chinese" (; a Chinese nationalistic term imposed by the Chiang Kai-shek regime after World War II) from the back cover of elementary school workbooks. In response to the Anti-Secession Law of the People's Republic of China, Chai and legislator Chuang He-chi proposed draft for an "Anti-Annexation Law."