"Behind my uncle's back" was a surprise attack, and the traitor was strangled with a rope from behind.
"The eagle catches the chicken" is to ambush the traitors on the only way in advance, and when they pass by, jump down from the slope or roof to kill them.
The above is not a game, but a traitor's execution method, in Jianghu terms. For example, in the Water Margin, Zhang Heng, a water thief, robbed money on the river, using "board knife face" and "wonton". The former is that he chopped into the water one by one, and the latter is that the victim took off his clothes and jumped into the river.