There are many assistants of Zhang Xueliang in history, including Miao and Xu.

During his stay in Xi, Zhang Xueliang had eight university teaching assistants.

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Zhang Xueliang's bodyguards are: Tan Hai, Jiang Huanan, Liu Duoquan and He Shili.

But there is no one named Xu Chengye, so Xu Chengye is a film and television image created by combining the image of Zhang Xueliang's assistant.

Zhang Zuolin, Zhang Xueliang's father, was killed by the Japanese army in the sound of the train, so Zhang Xueliang took over his father's banner and succeeded in the upper position. Tan Hai also became the head of the bodyguard department, and Tan Hai was promoted to the rank of Major General.

Extended information Xu Chengye sacrificed the plot:? When Zhang Xueliang arrived at Zhangjiakou Station by bus, the adjutant Xu Chengye noticed that there was something wrong with the surrounding atmosphere.

Stop Zhang Xueliang and say, "Colonel, I don't think the situation is right. I'll get you off the train. "

With the acquiescence of Zhang Xueliang, Xu Chengye walked unhurriedly to the car.

Unexpectedly, just after getting off the escalator, the sniper who ambushed in advance thought he was Zhang Xueliang, so he shot Xu Chengye in the temple, and Xu Chengye fell to the ground and died on the spot, too late to say a word when he died.