What is Zhang Qiling's identity?

Zhang Qiling is just a specific title, referring to the designated successor of the Zhang family (that is, the head of the Zhang family), and all the designated successors are called Zhang Qiling. Wu Xie speculated that the Zhang family in Gu Lou was also the person who buried the dead.

Extended data:

In "Hidden Sea Flowers", it is said that Xiao Ge is a character with a mysterious life experience. His father (non-biological father) came back from Nepal one year and brought back a baby as an infant, his little brother when he was a child and the designated heir of the current Zhang clan leader.

Zhang Qiling was originally a member of Grandpa Four (Chen Pi A Si), but was borrowed by his uncle (later proved to be false, and his actual identity was Jie Lianhuan). Once he lost his memory, he was treated as a Kun by the Vietnamese, and was rescued by Si Chen Pi, who became his right-hand man. After that, I have been looking for my forgotten memories. Later, the meteorite jade that entered the ghost town of Snake Marsh lost her memory again.

In "Notes on Grave Robbery in Gu Lou", Wu Xie and Fat Man lead him to Bajiao to continue searching for lost memories, and the mystery of his life seems to become clear. After entering Zhang Gu Lou, he recalled and ended everything he didn't know.

References:

Baidu Encyclopedia-Zhang Qiling