Zhang Xueliang or Chang Hsueh-liang (; 3 June 1901 in Haicheng, China – 15 October 2001 in Honolulu, Hawaii), occasionally called Peter Hsueh Liang Chang and nicknamed the "Young Marshal" (少帥), was the effective ruler of northeast China and much of northern China after the assassination of his father, Zhang Zuolin, by the Japanese on 4 June 1928. He was an instigator of the 1936 Xi'an Incident, in which Chiang Kai-shek, the leader of China's ruling party, was arrested in order to force him to enter into a truce with the insurgent Chinese Communist Party and form a united front against Japan, which had occupied Manchuria. As a result, he spent over fifty years under house arrest, first in mainland China and then in Taiwan. He is regarded by the Chinese Communist Party as a patriotic hero.