Answer: Xi
Xi of y incarnation knows this word. He is the lucky one from Xi. "Ai" means "besieged on all sides" and "lucky" means "controlled by external forces and unable to move". "Ai" and "Xing" together mean "a restricted area".
Original meaning: controlled restricted area. Extended meaning: prison, racecourse, etc. Note: At present, there are many similar restricted areas in China. For example, there are soldiers standing guard in some places at the gate of Nanjing, and there is a sign that says "Military Administrative Zone" next to the gate, which is "Xi".