He was given the nickname "Hero of History" () by PRC historians because of his desire to reunite China and rid it of Japanese invaders; and was willing to pay the price and become "vice" leader of China (not because it was good that he was supporting the Kuomintang). In order to rid his command of Japanese influence, he had two prominent pro-Tokyo officials executed in front of the assembled guests at a dinner party in January 1929. It was a hard decision for him to make. The two had powers over the heads of others. Zhang was a fierce critic of many of the Soviet Union's policies, which served to undermine Chinese sovereignty, including its interference in Outer Mongolia. When he attempted to wrest control over a part of the Chinese Eastern Railway in Heilongjiang from the Soviets, he was beaten back by the Red Army. At the same time, he developed closer relations with the United States.