Wu Xie's second uncle is to prevent Wu Xie from investigating about his third uncle and stuffy oil bottle in the past, which involves the deepest secret of Old Nine Doors, and is also something that his second uncle and third uncle don't want Wu Xie to contact.
Tomb raiding notes:
Notes on Tomb Robbery is a novel about tomb robbery written by Nanpai's three uncles. The main content of the novel is that a group of grave robbers dug up the remains of a silk book of the Warring States period and recorded the location of a strange tomb of the Warring States period, but almost all of them died. Fifty years later, the grandson of a native master discovered the secret in the notes of his ancestors. He gathered a group of experienced grave robbers to look for treasure. They met a series of strange events during the grave robbery.