The guide to share the trigger location of the bubble mission in "Honkai Dome Railroad" is a bit difficult to solve, but the editor tells you not to worry. In fact, there are only these few steps to solve this problem. It is very simple. Follow the editor's steps and you will be able to solve it immediately.
1. First of all, everyone wants to find the early [Space Station] map and find the Black Tower doll.
PS: The Black Tower doll here is not the Black Tower from "Simulated Universe"
2. After everyone finds the puppet, talk to it and ask the "bubble" question. At the end of the conversation, everyone chooses "Can I touch the bubble now?"
3. Finally, the bubble mission is activated.
Bubble location sharing
All in all, if you want to trigger the bubble mission in the game, you must first find the "black tower". The black tower here is not the black tower of the "simulated universe", and it is refreshed randomly. You need to look for it more one time.