Datang: We Agreed on the Magic Stick, and You Became the National Master?

Traveling through the Tang Dynasty, relying on Yiwu's small commodity "Taoist skills", Li Xuanqing became a famous magic stick in Chang'an City, the famous Xuanqing Zhenren! Every day, I "conquer demons and eliminate demons" and go to Pingkangfang to express my condolences to the ladies in various flower houses. I live a happy life. But something unexpected happened, Princess Jinyang was critically ill, and all the imperial doctors were helpless. As the most famous "Youdao Zhenjun" in Chang'an City, Li Xuanqing was tied up and "invited" into the palace by the Jinwu Guards! Looking at the angry little princess in front of him, Li Xuanqing felt panicked! I'm such a stickman! He doesn't know magic, let alone cure diseases and save people! What should I do now? Waiting online! Urgent! At the moment of crisis, Li Xuanqing looked at the inconspicuous prompt in the lower left corner of the engine interface: [Recharge one thousand taels of gold to upgrade the engine database. Do you want to recharge? How about... Take a gamble? Many years later, looking at the Imperial Master of the Tang Dynasty who could control wind and rain with a wave of his hand and whose appearance remained unchanged after decades, Li Shimin's face was full of doubts about life: "National Master! Is there really no magic in this world that can lead to immortality?" "Of course, Your Majesty must believe in science! There is no magic power in this world, and immortality is nonsense!" Li Xuanqing's face was full of righteous words, and then he flew away in the sky.