Beautiful Ex-wife's Contract Son-in-law

Who would have thought that there was a magical bookstore in the wilderness?
Everyone in Yun Han City knew that the owner of the bookstore was a peerless master!
Surprisingly, there were only more than ten books in the bookstore. However, the whole store was filled with the lingering sound of the Great Taos.
Shi Ritian was a young man who lost his Supreme Bone to his cousin, Shit Yee. Feeling despair, he wandered around the city where he found Lin Qi. In his eyes, Lin Qi was an expert at the Creation of Three Realms.
After all, all the books in the book store were regarded as godly objects by the immortal beings of the human race! Moreover, Lin Qi even let him drink the Undying Medicine: Six Ways to Life Tea. 
However, in Lin Qi's eyes, he was just a young man who transmigrated to this Mortal Spirit Realm. He was restricted by the system of a divine bookstore. Therefore, he couldn't take an initiative to look for customers. Instead, he would have to wait for customers to come to him. 
Even though Lin Qi was regarded as a peerless expert, he had thought that he was just an ordinary bookstore owner who wished to come into contact with the Holy Land of Cultivation.