How did the bad guy's Longquan sword recover after being broken?

I asked Xiaozi Ling to repair it. The bad guy Longquan sword comes from the TV series "Painting the Bad Guy in the Jianghu". In the 30th episode of this TV series, when black and white impermanence gained magical power, the bad handsome man noticed the illusion. After divination, he appeared, stunned Chi Meng, and told Li Xingyun that Chi Meng woke up and found himself brought into the imperial city of Bianzhou by the nebula. Black-and-white impermanence suddenly attacked and broke the Longquan sword. Then Li Xingyun found Wen Tao and Shangguan lark with the broken Longquan sword, and under their guidance, he arrived at the place where the sword was cast that year. In the third season of TV series, Longquan sword has become one of the most important symbols of Li Xingyun himself.