1. Ask the Peach Blossom Fairy to sign it. The map is refreshed every 30 minutes, and there is a chance to find it.
2. After completing Gisdan's task, you will have the opportunity to get the secret message from the East Factory and use the trigger task.
3. After automatically receiving the task, talk to Leng Yue Jr. to complete the selected branch task, and the task is over.