Time Travel to Become a Son-In-Law of a Generation of Genius

At the end of the Sui Dynasty, all the heroes in the world came together, a new star rose, and the Tang Dynasty was established. After Tang Taizong succeeded to the throne, he initiated the rule of Zhenguan, achieving political clarity, economic recovery, and cultural prosperity, and it was the heyday of a dynasty. But in the seemingly prosperous city of Chang'an, undercurrents are surging, and an inconspicuous son-in-law in a merchant's family, with no responsibilities at all, lives his leisurely, idle life, but step by step, he becomes...