Signing in the Cold Palace for Fifty Years, I Am Invincible in the World

Li Mu traveled to the fantasy world and became the deposed prince of Cangxuan Kingdom. At the beginning, I was thrown into the cold palace, but fortunately, I woke up to the sign-in system. Just sign in at special locations to get generous rewards. Bite! Congratulations to the protagonist for successfully signing in and obtaining the top-level physique, the Hongmeng Divine Body. [Ding! Congratulations to the protagonist for successfully signing in and gaining top-notch luck, unparalleled in the world. [Ding! Congratulations to the protagonist for successfully signing in, acquiring god-level swordsmanship, and opening the sky to destroy demons. Many years later, Li Mu walked out of the cold palace and found that he was invincible.