There is a hidden mission in the game, which is Dan Heng’s photo. The gameplay is simple, just get Dan Heng's photo. The following is a detailed explanation of the guide to obtain the Danheng photo mission of the Collapsed Star Dome Railway.
Guide to obtaining the Dan Heng photo mission in "Honkai Impact: Star Rail"
1. First come to the Fight Club in the upper left corner of Panyan Town (the location marked by the yellow circle) and enter the Fight Club;
2. After entering the fight club, turn right and go forward. In the corner, you can see two "excited fight enthusiasts" whispering. Select [Listen];
3. Through conversation, players can learn that they are fans of the cold-faced Xiao Qinglong (fans of Dan Heng) and really want Dan Heng’s photos;
4. Then the player can send a message to Dan Heng to get Dan Heng’s photo;
5. Then go talk to these two people. Note that there are two options: give it to you and 3000 credits.
▶▶Choose to give it to you, and you can get "high moral approval" (I personally recommend this one);
▶▶Choose 3000 credits to get 3000 credits (not recommended). In addition, there are 20 Winterfell Shields at the end.
The above is the guide for obtaining the Danheng photo mission of the Collapsed Star Dome Railway compiled by the editor.