Giant Sandworms

When they followed Uncle Li and reached the site of the attack, they saw a mass of fierce rats that was so big that it looked like a black tidal wave. They crawled out of the gaps between the trash and bared their teeth at the humans. 

The recyclers swung their steel shovels like baseball bats and sent the fierce rats who had jumped high into the air flying. 

The rats did not care and continued jumping around. 

Some people were scratched and bitten, and bloody wounds appeared on their bodies. 

Fortunately, the rats were rather small, and by the looks of it, they were just normal rats. They could not compare to the Rapid Biting Rats Meng Chao had encountered during the practical test of his national college examination. They could not deal much damage to humans, who were like giants to them, either. 

'Strange. Normal rats are cowardly. Why would they dare to attack humans in broad daylight?'