Before Han Yu arrived in Chaozhou, his articles had spread to Chaozhou. Chao De, a hipster, once glanced at the bridge, eating when he was hungry and drinking when he was thirsty, so that he was "full".
Han Yu was an official of the imperial court. Because he wrote a letter to advise the emperor not to greet the Buddha's bones, so as not to waste people's wealth and state affairs, the emperor was very angry, so he was demoted from Beijing to Chaozhou to be a secretariat.
When Han Yu took office, it coincided with the hardrain flood in Chaozhou, and the countryside was white. He patrolled outside the city and saw mountain torrents surging from the north. He thought that if the mountain torrents were not stopped, the people would suffer heavy losses. So he rode to the north of the city, first to see the water potential, and then to see the terrain, and ordered his followers Zhang Qian and Li Wan to follow his horse closely, and put bamboo poles in every place where the horse passed as a sign of the dike line.
When Han Yu inserted the dike line, he informed the people to build the dike according to the pole mark. Hearing this, the people were very happy and rushed to the north. It is said that as soon as people arrived in the north of the city, they saw that a mountain range had been arched where bamboo poles were planted, blocking the flood from the north.
Since then, there has been no flood here. There is a folk legend: "Han Wengong crossed Mount Mayin." This mountain was later called "Zhushan".