On April 6, 1936, General Zhang met with [Zhou En-lai]? (the enemy then) to plan the end of the [Chinese Civil War]?. In the [Xian incident]?, Zhang kidnapped Chiang Kai-shek and imprisoned the head of the Nationalist government until he agreed to form a united front with the communists against the Japanese invasion. Chiang at the time took a non-resistent position against the Japanese invasion, he rather put his efforts in fighting his own countrymen than the foreign invaders. Zhang was considered a patriotic hero by some because he forced his own government to fight against the invaders, even though his effort might not have made a difference after the Nationalist government later broke the truce with the communists. He was also considered a traitor by some because he kidnapped the political leader of his own party. He spent half a century in house arrest for his role in the Xian incident. He later emmigrated to Hawaii and spent the rest of his life there.