Which novel published before 2007 described a hero from a mountain village who ate the Essence Crystal of a magical beast, improved his skills, and finally defeated a dragon and turned it into armor? It was not a transmigration story?

This novel seemed to mention Ximen Yongxue, Xiao Qing, etc. The protagonist originally lived in a village in the mountains. Later, when he accompanied the villagers to the capital, he had to pass through a passage with magical beasts. In this passage, the protagonist found that he could eat the crystal cores of magical beasts and improve his cultivation. The others couldn't. Later, he was discovered by the upper echelons of the Imperial City and brought to a place where a dragon was locked up. They asked him to defeat him, but the protagonist couldn't defeat it. Then, the protagonist fainted, and a monster came out of the protagonist's body. It defeated the dragon, subdued it, and made it turn into armor to protect the protagonist. Later, the protagonist, his companions, and a mage went to the Magical Beast Region to do some things. I read it before 2007. I haven't finished reading it. I looked at the title. Please help me.
Not the modern world

Answer 1

According to the information provided, he recommended the book, A Good Son-in-Law in a Mountain Village. The main character of the novel was Li Huainian from a mountain village. He had accidentally inherited the Xuanyuan Great Dream Art from the ancient Great Wizard. He could eat the crystal cores of magical beasts to improve his strength. Later, he defeated a dragon and turned it into armor. The novel was a novel about urban life, not transmigration. It was published before 2007. I hope you like this fairy's recommendation. Muah ~😗