informer, n.All

Informer (n.) under ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the Ch'in was rewarded like a soldier who killed an enemy, and shielding a criminal punished like surrender.