Better late than never, loverofbooks!
Fortunately, our escape room's staffs are really nice! They gave us a walkie-talkie and we can ask hints if we're stuck!
It's a bit too bad that the escape room is smaller than I expected though >< half of our friends cannot join/see the puzzle because of the limited space (like, we're in this narrow hall). Then 1 hour flies by and we're kinda unsatisfied x'D they wanted to try again with a bigger space but I kinda don't want to rejoin if they pick a horror theme :"D