The prerequisite task is the [Safe Return] task in the upper left corner of "Rebirth Stream". The NPC is Lin Qian.

This quest is the starting quest for the must-have West Lake Vinegar Fish. If you follow this line, you will soon be in front of the hidden sword girl Chen Jingjing. Just follow the quest.

If you have cleared the mission on the Mingjiao map before, you should be able to directly see a repeatable mission, West Lake Vinegar Fish, posted by the chef next to you, Ding Pengpeng.