A subordinate of Xie Lanzhou who conducted a covert investigation into Su Panyue's true identity over more than a month. He infiltrated Lu territory and discovered an underground operation creating false identities for espionage. He reported to Xie Lanzhou that Su Panyue is a spy sent by Lu. The name Seventeen triggered traumatic memories in Su Panyue, as it was the name of the man who strangled her to death in her previous life.
