Wu Xia never showed mercy to the Japanese because these guys deserved to die.
Moreover, they had willingly become servants to the Ice and Snow Queen.
Therefore, they had no need to go on living, and only in death could they atone for their sins.
Humanity stood on the brink of life and death, but these guys were always only concerned with their own ambitions, refusing to let go of such racial and national ties—such countries needed to be eradicated.
If not eradicated, it would be hard to appease the anger of the people.
After killing his opponents, Wu Xia thought about entering the space to replenish his abilities, as the current situation was too complicated.
Spiritual Power had been depleted too much; it had to be replenished quickly, otherwise trouble would ensue once the Ice and Snow Queen resurrected.
In the Ice and Snow Space, the Ice and Snow Queen was restoring her power in large amounts, which made Wu Xia a troublesome presence for her.