MTL - Fantasy System - Chapter 521 Two good friends of 213

I am Lin Fan and I’ve become a jack of all trades just because of a powerful Encyclopedia.
In the first ever competition organised for trolls, all the other contestants lost. The crowd exclaimed, “Brother, you’re so good at trolling.”
Lin Fan replied, “But I’ve never been trolling…”

Hua Rong never expected to find herself in Blackthorn Academy, a notorious school created by the government to reform the most troublesome, undisciplined, and delinquent students. A place where chaos rules, fights break out daily, and the teachers have long given up.But Hua Rong doesn’t belong here. She’s determined to escape and return to her prestigious former school—by playing their game. The only way out? Earn enough points through perfect discipline. No fights. No trouble. No mistakes.Sounds easy, right?Except her new classmates are ruthless, the rules are stacked against her, and one particularly dangerous, devil-may-care boy seems hell-bent on making sure she never gets out. Xu Lingwei, whom she once rejected without a second thought. The boy who now stands at the top of Blackthorn’s unspoken hierarchy— holding a grudge.Under the second moon of fate, is this her second chance to make things right? Or will he be the reason she never escapes?.

Wang Xuan entered Longmao Square and was trapped in it. When he finally left, it turned out…

This is the last building on earth.

- Description from novelbuddy

What the hell is this? What the hell happened here?