Transmigrator's Guide to Conquering Another World

A suddenly appearing portal connects the modern world and the cultivation world. A team of explorers has been sent into the portal and what they report will definitely change the world.
"Based on the scenarios recorded in the reconnaissance team's equipment, the staff from the strategy department indicated that the area occupied by the valley can basically rule out the possibility of being anywhere on Earth."
"Why was such a judgment made?"
"Because... there are three suns hanging in the sky!"