Thirteen hundred thousand years ago, Immortal Venerable Canglan found a dying bud in the cracks of chaos, nurturing it with his heart's blood for three hundred years until it took form and called him Immortal Venerable. As the number one Immortal Venerable of the Nine Heavens, he defied the heavens and fate for this spirit plant destined for sacrifice. On a snowy night in Hangeng, she burned away her divine soul and fell, risking her life to protect him. Canglan searched every corner of the Nine Nether Desolations, only to learn her soul had scattered. He sealed the Yunlan Immortal Mansion and kept a lonely vigil. Ten thousand eras later, a wisp of her lingering thought returned, vanishing after just building a snowman together. He pampered her for three hundred years, harbored regret for thirteen hundred thousand years, until his soul scattered to go to the Yellow Springs to find her. In the end, there was no Immortal Venerable in the Three Realms and no spirit plant in the Yellow Springs, leaving only spirit fragrance in the empty Yunlan Immortal Mansion, and eternal lingering regret for thirteen hundred thousand years lingering on the summit of the clouds.