The "Peach Blossom Spring Letter" task in "Sixteen Voices of Yanyun" is a side task. To complete this task, you need to follow specific steps. Here's how it's done in detail:
Answer: Follow the guide, complete the plot dialogue, and deliver the hairpin to the farm to complete the mission.
1. First, we need to help the NPC adjust the piano and trigger the plot dialogue.
2. After the dialogue is over, go to the third floor of Zuihuayin to continue triggering the plot dialogue.
3. During the conversation, you need to give the hairpin to the NPC.
4. Finally, follow the mission guidance and continue to the destination to complete the conversation to end the mission.
The above is all about how to complete the Peach Blossom Spring Letter mission in "Sixteen Voices of Yanyun". For more game strategies, please click on the source code website.