Immortal Jailer: the Great Xia Puzzle

The immortal jailer spends his days fishing. Li Daoxuan possesses the secret of immortality and hides in the summer as an idle jailer. He just wants to live a stable life. However, the mad prisoner's deathbed prophecy, the ever-increasing pressure of the Ministry of Punishment officials, and the centuries-old royal secrets dragged him into a shocking mystery that subverted the imperial power. When the undercurrent surges in front of you, should you continue to pretend to be stupid, or will you be forced to reveal the real trump card of the Immortal? Let's see how an immortal who just wants to fish can break the dead game in Tianlao.