Cao Xueqin
As with Zhiyanzhai, the identity of Odd Tablet has eluded modern Redologists, with some experts believing that they could be the same person. But noted Redologist Cai Yijiang (蔡義江) wrote an essay speculating that Odd Tablet should be author Cao Xueqin's father. What is known for certain now is that Odd Tablet was a person of some authority over Cao Xueqin. He ordered Cao Xueqin to remove a passage detailing the incestuous adultery between Qin Keqing and her father-in-law from Xueqin's original text, leading to Cao Xueqin resorting to very oblique references when writing the sensitive passage. The incident appeared to be based on a household scandal during Cao Xueqin's grandfather, Cao Yin's (曹寅) lifetime.