Jack Burton: Ok, you people! Sit tight, hold the fort and keep the home fires burning. And if we're not back by dawn... Call the president.
When Jack Burton and the rest of the gang escape from the Wing Kong Trade Centre the first time, the guards fire at the left side of the bus breaking the windows and making holes in the bodywork. When we see the bus a few seconds later as it is driving away, it appears undamaged.
The weapons Lightning uses in the street-fight scene are known as ema-piercers - sharpened spikes mounted on finger or hand rings, capable of rotation. However, the rotation usually comes from the motion the user makes in combat; Lightning apparently uses his own power to make them spin like rotors.