The legend of the sword and the chivalrous man has been thoroughly studied.

Fairy thinking is the earliest. Murong Ziying collected the magic sword and brought it back to the sword tomb in Buzhoushan. Later, after Murong Ziying's death, the sword burial was occupied by monsters, and Shushan was ordered to soothe, so the magic sword was soothed by Shushan. Because of its powerful ghost power, the head of Shushan put it into the lock demon tower to contain it.

The lock demon tower collapsed and the building was restored, which was only at the end of the third fairy Zi Xuan. Originally, Zi Xuan wanted to use his spiritual strength to repair the Lock Demon Tower, but the appearance of heavy buildings prevented him. He used all his magic to repair the Lock Demon Tower. I can't return to the underworld in a short time, because my magic has run out. That's all.

As for the landlord's sentence "Why didn't he organize Li Xiaoyao to destroy the Lock Demon Tower", I didn't understand. Free and unfettered anger destroyed the lock demon tower, just because of self-interest and anger. Rumors of Xiansan and Xian Yi are that Zi Xuan, who inherited Xiansan, died to repair the Lock Demon Tower, so Paris has always protected the Lock Demon Tower, that is, Zi Xuan. As for why the tower was destroyed at large, the heavy building did not appear to stop it, which is probably unknown. Maybe it's a BUG, or maybe the war between ghosts and gods is too busy for Lou Ge to take care of (this reason is far-fetched)?

As for your sentence, it happened when you and your boss (the boss changed, not the old man, but the young man) went back to Yuzhou Xiaoyao Inn to chat with him instead of staying.

I made all these calls myself. I guess there is nothing wrong. I'm so tired.