In Yuzhong County, Gansu Province, it is said that there was once a father and son who were descendants of the early Pu family. In the early years, the Pu family always produced talents such as monarchs or generals, but in Pu Yinyang's generation, it was very lonely, and Pu Yinyang happened to be a geomancer and passed on his skills to his son. There was a Pu Yinyang who told his son when he was dying that after I died, don't give me a needle, and he buried me when he saw such wonders as snakes, drums and donkeys riding. So the son waited for 7749 days after listening. On this day, the wind was blowing hard and it was raining heavily. Suddenly, he saw a snake playing drums with its tail. He was shocked and remembered his father's last words. Then he went into the mountains and saw a donkey giving birth to Xiao Lv. In order to prevent the female donkey from getting wet, the farmer carried the donkey on his back and walked home. After seeing all kinds of wonders, I suddenly woke up and buried my father here. When digging a pit, I found three coins buried by my father in advance, lamenting that my father had planned ahead. The next day, I couldn't wait for the day to end, so I shot three arrows in Beijing. These three arrows just hit Zhu Yuanzhang, so I quickly called Liu Bowen, a strategist. Liu Bowen decided that this was an emperor in the northwest, so Liu Bowen hurried on the road and cut off all the roads from Long Mai to the northwest.
These stories are beautiful folklore, not specific facts recorded in historical materials. Liu Bowen cut off Long Mai's links with other parts of the country, which has also become a beautiful dream of people all over the world for its fertile soil.