Big Brother... originally came armed with weapons.
Not only with weapons but also with his underlings...
However, when he saw Sun Yixie arriving alone with only fishing gear, he approached without any weapons; as for his underlings... after being verbally jabbed by Brother Sun a few times, they were sent away by Big Brother himself.
So now, facing the stone swung at him by Sun Yixie, Big Brother could only defend with his bare hands.
Can an arm be harder than a stone?
In the world of martial arts, it actually can be, like Xie Run from the Yiyong Escort Agency, whose extensively trained Kung Fu could withstand not only stones but even hammers.
