What's the use of finding a fairy Taoist?

Finding an immortal Taoist can trigger a hidden mission. According to relevant public information, the immortal Taoist Mi Changsheng is a fortune teller. He likes to tell fortune in crowded places and often appears in inns. Players can talk to a Taoist priest, and after the conversation, they have three chances to trigger the hidden task. The first two dialogues will provide the player with a Lingshi task, and the third dialogue will sell the player a fragment of Han Xu Xianfu.