I Am Conquering the Villain NPC in the B Game World

[System+1v1+healing+ancient wear+strategy] Yuan Wu Nian, the villain of Yiyou created by himself, has no past and no future. Once he appears, he will inevitably turn into something dark. And the mission of his time travel was actually to help him fulfill his obsession. Yuan Wu Nian: Taiqing Pagoda on Huangquan Road, under the Taiqing Pagoda is the Soul Locking Gua. Chu Ying, have you heard of Taiqing Tower? It is said that in the Wuming Mountain in the far north of the East, there is a tower towering into the clouds on the top of the mountain, called Taiqing Tower. The Taiqing Pagoda has no doors and roads, and inside it lives the sage of the Taoist Buddha. The body and the tower are integrated into one, and he saves all living beings here. If someone has an obsession that cannot be completed before death, he can see the way out. When he comes to Taiqing Tower, Wuwu Taoist Saint will help him fulfill his obsession. So what exactly is Yuan Wu Nian's obsession?