How to trigger jade mining at sea?

The triggering mode of the task of picking up jade at sea is as follows:

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

1, finish Ganyu's personal line first.

2. Then come to the position below Moon Harbor.

3. Then fly to the man with the exclamation point.

4. Then talk to Dakun.

5. After the final dialogue, the task of picking up jade at sea will be triggered.