 Later he successively held the positions of Adviser of the same Ministry and member of the Beiping City Government.After the Second Sino-Japanese War broke out, Zhu Xingyuan participated to the Provisional Government of the Republic of China where he was appointed Chief of the Bureau for Social Affairs of the Tianjin Special City.After establishing the Wang Jingwei regime, in May 1940 he was appointed to Chief of the Bureau for Foreign Affairs of the Agency for Political Affairs, the North China Political Council ().