Before the Tang Dynasty, crows were auspicious and prophetic birds in China folk culture, and there was a historical common sense legend that "crows give good news, and Zhou Xing begins". After the Tang Dynasty, crows were said to be ominous. In the Tang Dynasty, Youyang Miscellanies said: "There is no good sound on the ground in Wu Ming. When people leave, they follow the crow's voice. They are so happy. This old occupation is unstoppable. "

China's flower-and-bird paintings were rare and immature before the Tang Dynasty.

Because of the ominous implication, many painters don't paint, so it is difficult for anyone to buy it. Who hangs a crow with a bad omen? Later literati paintings, some painted dead trees and crows to highlight the sadness of the picture. Such works are rare.