What Happened in Those Years in the World of Cultivating Immortals - Chapter of the Immortal World

System, time travel, Gou, Wang Mang traveled through the fantasy world and obtained the immortal system. Relying on the principle of perseverance all the way, he went from being a mortal to ascending, but the world of immortality was completely different from what he expected. The extraction of life essence, the secret of Yongye, the mysterious Emperor Immortal, many magical experiences, and the uneasy feelings of his master. All the stories will start with him becoming a security guard in the fairy world