At this time, an arrow shot from the city wall, and it seemed to be wearing a letter. A personal soldier of Ma Chongying carefully passed through the position and picked up the letter and handed it to Ma Chongying.

Ma Chongying tore the letter and pulled out the letter paper inside. He saw only a sentence on it, "If you go out of Zhangye first and then take the West, you will definitely win Wuwei."

Ma Chongying was stunned for a while. He suddenly sighed, turned his horse's head and waved his hand, "Retreat!"

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Chapter completed!