Rong Qingyou was guarding one side, ostensibly to maintain local peace, but actually to suppress the sealed demon. Rong Qingyou was unwilling to be tied to this place all the time, and had been thinking of ways to make a magical weapon to completely get rid of the big devil.
He went out to search for materials, but he couldn't stay outside for too long. He would soon return to Yunji Palace.
After hundreds of years of searching, only the hilt and tip were left.
A fox came to his door and begged him for help. It's just to block the catastrophe
Rong Qingyou took advantage of the situation and made a request, "I'll help you if I touch my tail!"