In the game of Sixteen Echoes of Yan Yun, players are provided with a realistic wuxia world where they can interact with these knights. There are also rich storylines and puzzle elements. Players can freely explore and adventure, and there are many serendipitous quests, such as the Hidden Moon Mountain quest in Sixteen Echoes of Yan Yun. Players need to complete these tasks to enhance their character's abilities and gain more rewards, all of which need to be completed subsequently.

The map in the game is very extensive, so teleportation points are designed to help players reach destinations faster. If players want to complete this serendipitous quest, they first need to teleport to the Immortal Ferry location, find the NPC Tong Xiaoyun, and talk to him to trigger relevant plots. Subsequently, they need to use mystic arts to steal three items.

These items are a jar emitting a pear fragrance, a small pot with meat aroma, and a storyteller’s box. These three items are very important. After collecting all three items, players can obtain an oiled paper packet, which should then be given to the little girl.

This will trigger related plots, revealing his lie. Then, players need to inquire about the little girl’s information from nearby NPCs and eavesdrop on their conversations to learn more. This opportunity quest is quite simple, and the rewards are also generous.

So that's the guide for the Hidden Moon Mountain quest in Sixteen Echoes of Yan Yun. If players want to complete the task of Old Lady Mountain Child, they can follow the content in the article to operate. Every task in the game requires interaction with NPCs, and these NPCs are designed to be very vivid and personalized.