Zhang Heng, nicknamed Ship Anger, is the 28th Liangshan hero and the second leader of Eight Villages of Liangshan Water Army. Before going up the mountain, Zhang Heng made a living by punting boats, and was also a private businessman, doing things like killing people and stealing goods. Later, after he went to Liangshan, he followed Liangshan to the north and south and became a hero in the water army. He is stationed in the water village in the southwest of Liangshan.

Later, when he accepted the favor of the imperial court, Zhang Heng learned the news of his brother's death when he conquered Fang La, which was a great blow. Later, he contracted the plague and had to stay in Hangzhou. Finally, he died in Hangzhou, and after his death, he chased Zhong Goro.

Zhang Heng and Song Jiangdu are one of the heroes in Water Margin. They are strangers, not just because of an accident. Zhang Heng later helped Song Jiang a lot because he joined Liangshan.

Zhang Hengjie Song Jiang:

Sung River passed by Jieyang Town when he was in Jiangzhou, and accidentally offended the bullies Mu Hong and Chun Mu in Jieyang Town. While escaping from the pursuit of Mu Chun brothers, I met a boat crossing the Xunyang River. In order to avoid being chased, Song Jiang got on the boat.

Zhang Heng saw Song Jiang get on the boat, and despite the cries of Mu Hong and Mu Chun, he saved him by punting. Sung river was relieved, but he didn't want to turn against each other. He not only robbed Song Jiang of all his money, but also forced him to jump into the river.