In diamonds/pearls, the ground of the lost tower is grass with bright light. The guardian on the top floor sends out symbols of cleanliness and esoteric learning devices (Machamp). The lost platinum tower was replaced by bricks, and the room was dark. There was a light on the wall and fog began to appear on the third floor. The protagonist must dispel the fog before he can get the symbol of cleanliness and curse from the guardian.
When doing the task, I came to the 209 road and saw a man fishing. I discussed with him to buy a good fishing rod. See the broken stone tower, put on the keystone we found before, and then go to the lost tower above.