This quest starts in your mailbox, as a missive from Lorewalker Cho after completing the Fish Tales achievement.
The quest is turned in to Lorewalker Cho, top of the Mogu'shan Palace, in the Vale of Eternal Blossoms. when you do, he casts storytime on you, and then tells the story of the Jinyu, complete with re-enactment.
"Great events often have humble beginnings. Consider: a quiet pond. Still. The water is like a sheet of glass.
Until I throw a stone. Such a small think - but soon, ripples engulf the whole of the lake!
The jinyu also have humble origins. Once primitive creatures, they were fortunate enough to live near the enchanted pools within the Vale.
The magic of the pools expanded their minds, and grew their bodies, until they became one of the great ancient cultures of pandaria.
The wisest of the jinyu are very wise indeed - they can speak to the rivers the way you and I would consult out elders.
In the whispering waters, they can hear the future.
The jinyu and their waterspeakers stand at the very heart of the greatest events in Pandaria's history.
Their visions built empires, freed slaves, and warned our Last Emperor of the Sundering that shattered Azeroth ten thousand years ago.
Think about it: the smallest voice can change the world. Consider that, friend, the next time you decide to start throwing stones."
Miss part of the story? Lorewalker Cho will retell it to you, if you ask him.
The patterning of this comment was modeled after Calesta, who has put in a similar comment about every other lorewalker quest.