I'm new to this, so please bear with me.
This is the story of Liancheng Bi who died and traveled to the Sword III version of the Tang Dynasty to become the son of Ye Ying's cousin, the owner of Hidden Sword Villa. Later, he became Ye Ying's disciple and became Ye Ying's third disciple. After his death in the Anshi Rebellion, he returned to his own world and found that he was still Liancheng Bi when he was a child. After a series of turmoils, he worked hard to break the void and return to the Tang Dynasty.
Opening his eyes again, he looked at the decorations in the room and found that he was no longer on the battlefield, but... He had actually returned to the time when he was still the Lian Cheng Bi! Lian Chengbi looked at the strange house around him and found that everything he cared about before was so strange. Now, the thing he couldn't let go of the most was the hidden sword, Li Tang...