Tools/materials: iPhone 12, ios 12, and Optical Encounter 1.2.3.
1, enter the game first.
2. Enter the rainforest map. On the right side of the third door of the rainforest map, you can see the entrance of the hidden map.
You can see a lake after entering, and a tree hole can be seen on the left in front of the lake.
This tree hole is grandma's home, and you can see the dining table.