Journey to the West belongs to the Tang Dynasty, and so does Bai Juyi. These two places have the same name, and there is no doubt that they are the same place. However, the novel is a novel after all, and the owner of Jiangzhou is the chief executive of a state. However, in the novel, Tang Yan's mother put him into the river after giving birth to him, and Tang Yan ran down the river to Jinshan Temple, 500 kilometers away. How did Tang Yan drift 500 kilometers? Of course, the Tang Priest was born in an extraordinary family, and we won't be entangled in this with the protection of the gods.
Bai Juyi was the Sima of Jiangzhou, Jiangzhou belonged to the level of Zhongzhou in the Tang Dynasty, Bai Juyi was the Sima of Zhongzhou, and Sima belonged to the official position of military attache.
As the prefect of Zhongzhou, Chen Guangrui is a four-grade official, while Bai Juyi's Zhongzhou Sima is a six-grade official. Before Bai Juyi was demoted to Jiangzhou, he was Zuo Zanshan, a prince. This is an official position with five qualities.