Cannot live under the same sky as one’s enemy

“Cannot live under the same sky as one’s enemy” is a maxim of filial vengeance that frames You TanZhi’s estrangement from Xiao Feng and his confused attempt to make sense of revenge. Its recurrence links a deliberate refusal to accept aid with a wandering reflection that tests the rule against the arbitrary logic of inherited enmity.

Refusal and the grievance

After Xiao Feng releases a group of captives, You TanZhi remains behind. Xiao Feng offers to let him follow back to the city if he needs money, but You TanZhi rejects the offer, insisting he would sooner die poor than take even a small sum from him. He accuses Xiao Feng of disguising further humiliation as help.

Xiao Feng recognizes the force of the grievance: he caused the death of You TanZhi’s father. Thinking of the saying that one cannot live under the same sky as one’s enemy, he concludes that argument is pointless. He refuses to kill You TanZhi and leaves him free to seek revenge. The maxim thus marks both the depth of You TanZhi’s hostility and Xiao Feng’s acknowledgment that it cannot be settled by explanation or a charitable gesture.

The saying reconsidered

You TanZhi walks alone after declining to travel with the other released captives. Hungry on the snowy grassland, he imagines being a sheep able to eat the grass and drink the snowmelt. But the image turns into a question of vengeance: if people killed his sheep parents for food, would he have to avenge them because he could not live under the same sky as their enemies?

The imagined case unsettles the maxim without resolving it. You TanZhi recognizes that the people who kill animals do so because they raise them for food, yet he cannot find a coherent logic for taking revenge on them. The repeated rule persists even as his own thought exposes how indiscriminately it can extend enmity. His reflection ends not in a decision but in interruption: Khitan soldiers capture him and take him away.

Function in the narrative

The two appearances place the saying between personal grievance and a more general, uneasy meditation on revenge. For You TanZhi, the inherited formula makes accepting Xiao Feng’s help feel intolerable; in his solitary speculation, the same formula becomes difficult to apply consistently. The contrast presents vengeance as a powerful obligation that can dictate conduct even when its boundaries and logic remain uncertain.