You Promised Infinite Defense and You Can Kill Him with One Shot?

The Central Plains competes for the throne, and dynasties compete for hegemony. Xu Xiao travels across the battlefield where the two countries are fighting. How does a small soldier handle himself? He holds a spear in his hand to kill the enemy! Um? Can defense accumulate lethality? [Block successfully, killing power +11] [Block successfully, killing power +13] "Hey! Why do you only defend and not attack?!" "My ancestors told me to be kind to others. Come on, come on, come and fight!" "Pfft——" The enemy commander stared at the spear buried in his belly: "As promised... Only for defense?" How long is the enemy army? One shot! Enemy soldier commander? One shot! The enemy's uncle? One shot! A few years later, Xu Xiao looked back, conquered the six kingdoms, rode the rivers and lakes, faced the last dynasty, the Western Chu's hundreds of thousands of warriors, and he grinned. "One hundred thousand enemy troops, I'll treat them as one man and kill them. Is that okay, everyone?"