My endless inventory

Ouyang Xing, a game geek, and a game strategist cross over to the world of immortal cultivation, where he starts as the reincarnation of the Heavenly Emperor + the Supreme Immortal. Unfortunately, the Immortal clan/race is in decline in this world, and their situation is worse than that of dogs. As a collection fetishist, no matter what exotic treasures, celestial palaces, or heavenly fairies, I want them all!!