The game "There are people in the depths of Taoyuan" will open the friend system at the level of 13, and people in the depths of Taoyuan can unlock it by upgrading. Farming, cooking, bird stickers and recipe research are all ways that can be unlocked quickly in the early stage. Lolo entertainment needs to be unlocked at level 8, and the piano needs to reach level 24 and the trees near the piano room can be cleared before it can be unlocked.