After the River of Sands, Tang Seng subdued Sha Seng.
While Sun Wukong and Tang Seng shared merely a bodyguard-client relationship, Zhu Bajie and Sha Seng lacked any leverage to negotiate and obediently became Tang Seng's disciples.
Only after this tribulation did Li Qi begin examining the historical records of the Primordial World prior to the three clans.
Chapter 174