The "Ye Luzi" tomb robber who lives outside the old nine gates uses a private notebook with a cowhide cover as a "weapon" to record what he has seen and heard in his more than 20 years of tomb robbery - from the identification of the Taotie pattern in the Shang and Zhou Dynasties to the mechanism maps of the tombs of warlords in the Republic of China, from the flaw in Chen Pi's sword skills to the hexagram code of Qi Tiezui. The notebook is not only his survival guide, but also his armor against the "information fog". He has no family or sect, but he knows the secrets of the Nine Sects very well. This "outsider's sobriety" is exactly the key to what the Old Nine Sects lack.
