After we've learned about the strategy for the 14th level of escape challenge 3, I'd like to tell you some experience and experience of the 15th level.
First, we collect the items in the upper left corner of the elevator. Then we click the table on the right side of the elevator to get the pieces on the table. Then we click the treasure box on the table from right to left to get the things in the box. Then we should remember to adjust the triangle pattern in the box to the side and don't block the lock cylinder. Then put the things from the box on the telescope in the room, and click to observe, click on the screen to remember the position of the stars inside. If you click again, another part of the stars will appear, and the position of the stars should also be remembered. Then go to the left side of the room and click on the stars on the wall to light up the position of the stars just seen in the telescope. Then we collect the fragments on the left wall according to the game tips and remember the patterns on the top.
Then we go back to the side of the table and open the cupboard. We will see a pattern in the cupboard. Then we put the pieces in the middle of the pattern. Then we adjust the order of the pattern and directly open the lock to get the props (mirrors and test tubes). Put the new lens on the telescope and look at it again, we'll see the different positions of the stars again, and then light it up again. Then we take some items from the box on the right side of the wall according to the game tips, and then we turn the button again to keep the lock cylinder clear, and remember the top blue glass bottle. Then we change the screen, we come to the right side of the room, then adjust the red and blue of all kinds of test tubes, and put the test tube up to get the new items; then we can observe the combination of the test tube and the received paper under the microscope, then a jigsaw puzzle. Finally, open the treasure chest on the left side of the room, use the image seen under the microscope to adjust the password lock, and then get the key to the door, we can directly open the door to pass.
The above is the 15th level of some personal experience, I hope you have a good time in the game.