Is the Divine Vein Broken? It's Okay, I Have Twelve Talismans!

The protagonist Ling Chen was an ordinary archeology student on Earth in his previous life. He traveled to a fantasy world. The former genius became useless, his divine veins were abolished, and his engagement was broken off. At a critical moment, the system was activated, and he counterattacked all the way, and finally became the emperor of Qingyun Realm. (The introduction is weak, please read the text)