The reason they didn't throw the grenade immediately was because they couldn't understand how fast Li Ang's response was, and they feared it might be picked up and thrown back before detonating, injuring themselves instead.
So, they timed it perfectly, calculating the speed so that the grenade would explode right in front of Li Ang.
But Li Ang was not foolish, let alone he had just finished observing the masked man's technique.
As they threw the grenade, Li Ang also picked up an excavated stone from the ground and threw it.
When the rock collided with the grenade mid-air, the Arab group really panicked; they knew what they were dealing with were not dummy grenades, but genuine high-explosive grenades.
Consequently, the five men instantly scattered in all directions, but Li Ang had anticipated this and his master-level [Hidden Weapon Throwing] skill was not to be taken lightly.
