The 3rd level of the lost world of the Escape Room Classic series is fully analyzed, and what we need to pay attention to in the game is that the interconnection of different clues requires remembering the password to solve the puzzle. Room Escape Classic Series Lost World Level 3 Gameplay Players who want to pass the level quickly will learn it together, hoping to help everyone.

It's like an abandoned factory how can we get out.
Look at the clutter on the right first to get the handle and hook.
Take a knife here on the switch in front of you on the right.
Using a knife to open a box on the left with a pattern printed with a chain will result in a chain that combines it with the hook.
Find the switch in the front and insert the handle into the switch and click on.
Attach the chains and hooks to the hanger just above the middle.
Click the green button on the switch.
So the door opened, let's get out of here.