Shocked, After Time Travel, I Turned Out to Be a Handyman at Zuiyue Tower

Lu Chen, a modern social animal, woke up and found himself in the "Drunken Moon Tower" of Nanliang Kingdom, becoming a humble handyman. On a rainy night, in the secret compartment of the accounting room, he found a fragment of a secret letter, which mentioned that "in the autumn of the Jiaxu year, the jade cicada appeared in Luoshui", and his birthmark was exactly like the jade cicada. Is all this an arrangement of fate or the beginning of a conspiracy?