This is the consequence of a Mecha charging into a position.
The long blade swung again, directly severing the tank's cannon with a single stroke. This time, Ji Xinghe was using a Chain Saw-tooth Knife, which caused a horrifying cross section in its wake. The second shell that the tank had fired could not exit the barrel before it exploded. The explosion engulfed the tank, by which time Ji Xinghe had already driven his Mecha over it.
From the perspective of the direction in which Ji Xinghe was charging, it looked as if the flames were propelling the Mecha he was driving. The Mecha made a rapid leap into the air. Due to the difference in gravity between the Alien Planet and Azure Star, the falling speed would be about three times slower, which was not a wise choice in battle tactics.