What is the ending of the contradictory story?

The ending tells us that an impenetrable shield and a spear that pierces everything cannot exist at the same time.

Said by: Everything was done by Han Feizi.

The Chu people with shields and spears are called:

conflict

"My shield is so strong that nothing can sink." He praised his spear and said, "The benefits of my spear are all trapped in things." Or, "What about a child's spear and a trapped child's shield?" He has the ability to respond. An impenetrable shield and an impenetrable spear cannot stand side by side.

A Chu man who sold shields and spears praised his shield and said, "My shield is so strong that nothing sharp can penetrate it." He boasted of his spear and said, "My spear is so sharp that anything solid can pierce it." Someone asked him, "What would happen if you stabbed your shield with your spear?" The man couldn't answer. An indestructible shield and a spear that pierces everything cannot exist at the same time.

A man selling spears and shields praised the firmness of his shield: "Nothing sharp can penetrate it." Later, he praised his spear and said, "My spear is so sharp that any solid can pierce it." Someone asked him, "What would happen if you stabbed your shield with your spear?" The man couldn't answer. An indestructible shield and a spear that pierces everything cannot exist at the same time.