First, you have to get the digging tools from an old man in the city in the second place, and then you can enter the underground world by using props anywhere. After talking to an NPC, he left. At this moment, the indicator light of DS/DSL starts flashing, but don't worry. The next thing to do is to travel all over the world.

When you click on the screen with a stylus, a circle will appear. If there is treasure in the circle, it will drive away the fog. Players can aim at this position to investigate and enter the treasure digging screen. The roads that can be used to dig for treasures are hammers and hammers. Hammer can dig a wide range, but it also has a great influence on collapse. Hammer is the opposite. What the player has to do is to dig up as many treasures as possible before the crash (the crack on the far left of the screen indicates the crash). As long as all the treasures are exposed, the excavation is successful, and when all the treasures in this place are dug up, it will automatically end. The hardness of the ground is also different. When you encounter gray rocks, you should be careful not to knock, and knocking is useless. The treasures that can be dug are: jade (used to exchange props), fossils (used to revive ancient pets), fragments (used to exchange fossils) and some props.

Jade can be exchanged for props of underground NPC secret base, the most important of which is the drill. You can dig a secret base against the wall, but remember that it is a one-time one. Next, exchange decorations according to your own preferences to arrange.

The WIFI part can only be skipped temporarily because I can't test it.