This article is probably a fanfic of Swordsman Love III.
It was December, and it was cold and snowy in winter. A weak-headed young man named He Ronglou broke into the palace. He wanted to seek justice for his adoptive father, but he was placed under house arrest in a corner of the palace. There are all kinds of sorrows, each of which is complicated. A few days later, he received a holy edict, and he actually became the national advisor of this royal capital... Many years later, he returned to Chang'an Street, and everything was different...