He decapitated the monster, speared the head with his sword, and flung it over the city wall. Only then did Shen Wenchen swing his knife towards the next beast.
"General, everything is ready!"
Liu Jie shouted from the side. Shen Wenchen waved his hand, and a flag was raised beside him.
Flags were hoisted high all across, and the city's defenders pushed down the beasts from the city walls.
The monsters looked puzzled, but their bodies instinctively tried to climb upwards once again.
The biogas spread along the conduits, beginning to fill up from the bottom of the city wall.
A fireball dropped from above and exploded the instant it touched the biogas.
The monstrous flames swallowed everything, causing unbearable pain to the monsters. They howled out in agony and fell.
The strong smell of burnt flesh filled the air, making people want to retch.
"General, a few of them escaped."