Time Travel: I'm in the Immortal Sect

A middle-aged low-level social worker travels to a corner of the vast world of immortals and hides in the logistics department of the Infinite Immortal Sect. Relying on the wisdom and brain that merged during the journey, he works his way up from the bottom to his qualifications, gradually improves his cultivation and position, perfects every skill and skill, and finally reaches the top of the sky, the supreme immortal sect that can turn everything upside down.