```
A simple flame trick—actually just a spark—was flicked out, illuminating the dim rock walls.
Then the gunpowder ignited, hissing and crackling.
Teacher Xia immediately turned and, using his hands and feet together, started climbing upwards.
He was like a frog, leaping out from the crevice in just a few bounds, picked up the glider that he had prepared earlier and strapped it on his back, then dashed to the right and, ultimately, took a leap off the mountain!
Boom—
An explosion sounded from behind him, drowning out the noise of the opening glider.
Boom boom—
Once, twice...
The blasting was incessant to the ears, thick smoke billowed out from between the mountain walls, and the yellow-brown gravity barrier was triggered with delay, encasing half of the mountainside like a ring of stars but failing to have its intended effect.
