The Earliest Memory Starts from You - S1.E4

In the prison cell, the Butterfly Slave, who seems to have died, suddenly comes back to life. Ling Chang Jin's guard, Kun Qing, promptly arrives and informs Ministry of Security's guard, Jin Ming, that the Butterfly Slave has merely been feigning death after being wounded by a sharp weapon. To completely kill the Butterfly Slave, the body needs to be burned. Ling Chang Feng stabbed Tang Qian Yue with his sword to momentarily shock her. Upon regaining consciousness, Tang Qian Yue confesses to Ling Chang Feng that she has always been a Butterfly Slave. However, she is different from the others as her mind was still intact.