In Great Xia mythology, it was the main entrance to the heavenly court, as well as the gateway from the immortal realm to the human realm.
Mercer had Cloud Heaven as his energy source, so it made perfect sense for him to call the Battle Engine system he created the "Southern Heavenly Gate."
[Constructing Southern Heavenly Gate system...] [Construction successful!]
"Let's see how well it works."
Mercer suppressed his enhanced body to the level of an ordinary person, then spoke to the Southern Heavenly Gate system.
"Adjust spatial structure. Adjust gravitational structure."
[Adjusting spatial structure. Adjustment in progress...] [Adjusting gravitational structure. Adjustment in progress...]
Mercer's physical capabilities were now entirely those of an ordinary person. After a wait of around ten seconds, the Southern Heavenly Gate system replied.
[Adjustment successful!]
After sensing the changes around him, Mercer gave a light jump. An ordinary person could not jump very high, yet that single leap carried him several meters into the air.
He swung his fist hard, sending a powerful gust of wind off his knuckles.
"Nice, very nice. Restore everything to normal!"
Mercer praised it. These enhancements alone were enough to give an ordinary Earthling a body on par with those alien beast warriors.
"Give me a gun."
With a thought, a silver-white MK14 materialized in Mercer's hand. He did not know any high-tech guns, so he used a real-world firearm as the model.
He pulled the trigger. Instead of ordinary gunpowder rounds, it fired beams of red laser light.
He fired a dozen or so shots aimlessly into the sky ahead. The laser rounds made the gun effortless to control, letting him hit exactly where he aimed.
"Very good. Basic functionality is working fine..."
Mercer nodded in satisfaction. He had barely finished his assessment