Because this was not a spell at all, it was only primordial energy attached to the firecracker, wrapping it up.
As long as one reached the eighth grade, their control over primordial energy could achieve this. After forty-five minutes, it would automatically dissipate.
Without the primordial energy wrapping, the firecracker would soon explode in the scorching underground.
...
A quarter-hour later, Zhao Xing and Chen Shijie were the first to arrive at the underground outside the city.
The other personnel gradually returned to their positions.
After another quarter-hour, all one hundred action personnel were completely in place, without a single mishap.
"Retreat!"
Chen Shijie immediately gave the order.
There was only fifteen minutes left before the explosion, so they had to get far away to avoid being affected.
.....
In the City Lord Mansion, Bastard awakened from a dream.
The two beautiful women of the Fire Demon Clan beside him also woke up.
"What's wrong, my lord?"
