Wang Zanghai knew the secret of the Zhang family's longevity and that his time was running out, so he left all the secrets on Tong Yu with snake eyebrows, hoping that the Wangs could know the secret through Tong Yu with snake eyebrows in the future. The descendants of the Wangs didn't live up to Wang Zanghai's expectations, but what they didn't expect was that this was Wu Xie's plan to find the snake-browed child feather. Through the carving technique, the Jurchen characters were hidden in fish lines, and what happened when he was taken by slave king Lu to repair the tomb was recorded. The most important content is the truth he discovered about the slave king-a monster from the underground. There are three snake eyebrows communicating with the universe in the book "Notes on Grave Robbery", which were placed by Wang Zanghai in the three feng shui treasures in China, and finally fell into the hands of Wu Xie, the protagonist of the novel.