A few moments ago...
Mercenaries hired by the black market and soldiers from unknown regiments were guarding the defence line while rotating shifts at regular intervals so that they would not be exhausted quickly.
The attack on the defence was quite fierce still they managed to hold as the Black market spent a lot of resources to form the line of defence.
Unfortunately...
CRUNG!CRUNG!CRUNG!CRUNG!
A hundred metres away from the defence line, in a deserted building that was supposed to be an upper district of the Black market, faint tremors echoed.
Due to the loud sound of explosions, the faint tremors went unnoticed until the end.
A soldier patrolling in the area caught the disturbance but ignored it thinking that the earth was quaking because of pressure radiating from the battle from the defence line.
Still, he bent down to observe the disturbance but the tremors softened and disappeared.
"Weird!"The soldier muttered.