A Pseudo-Tangdi Imperial Article

Xuan Jibai was a killer. One day he accepted a mission and went deep into the palace to assassinate the tyrant. The identity given to him was... The prince who was the last prince born to the late king Lu Shui overnight. It is known that this tyrant killed his father and brother before he came to power, and killed all his blood relatives. Xuan Jibai: "The task is very difficult, I need to pay more." Task leader: "Add." So he entered the palace and became the tyrant's cheaper brother, but was there something wrong with the situation? Purpose: To build a beautiful and harmonious society.