Where is the strange sign of Hatch Island in Genshin Impact?

The location of strange marks on Hatch Island in Genshin Impact is as follows:

Tools/materials: iPhone 12, iOS 14.5, Protogod 2.6.

1. In the game, we came to Haishu Island and opened the map. We need to go to eight places on the map.

When you come to the place marked on the map, you can find strange marks and trigger the plot.

3. After the story is over, you can dig under the strange standard.

4. You can get the treasure chest.