 Complete the following phrase:  After Yuans death, Li Yuanhong became president and Duan Qirui, the prime minister, and the National Assembly was reconvened. The government soon faced a crisis over whether to enter World War I on the side of the Allied Powers or remain neutral. Li dismissed Duan, who favored entry into the war, and invited warlord Zhang Xun to the capital to mediate. Zhang and his pigtailed loyalist army marched into Beijing, dissolved the National Assembly and 