However, this was only a temporary respite, and by nightfall General Song admitted that further combat was futile and withdrew the main force of Chinese 29th Route Army south of the Yungging River. Tianjin Major General Zhang Zizhong was left in Beiping to take charge of political affairs in Hebei and Chahar provinces with virtually no troops. General Liu Ruzhen's New Separate 29th Brigade was left in Beiping to maintain public order.