Why Do We Fight? (quest)

Why Do We Fight? wraps up the Mists of Pandaria storyline, with the reward being a cutscene between the player, Lorewalker Cho, Emperor Shaohao, and the August Celestials. This cutscene can be replayed by interacting with the Wisdom of the Emperor object next to Cho in the Vale of Eternal Blossoms.

Completing this quest also unlocks the objects Memory of the Alliance and Memory of the Horde (the nearby stone pillars), which will replay the respective faction cutscenes for the end of Siege of Orgrimmar.

Objectives
Lorewalker Cho wishes to speak with you in the Vale of Eternal Blossoms.

Description
Oh my friend, today you and your companions have put an end to the sha that has plagued Pandaria since before time was recorded. You have accomplished that which even the titans and their mogu servants could not: destroying the last breaths of Y'Shaarj.

Come, will you join me in the Vale of Eternal Blossoms? There is something I would like you to bear witness to.

Rewards
You will receive:

Completion
Our precious Vale of Eternal Blossoms. So much destruction and violence. But... I sense a glimmer of hope.

Gains

 * 236,000 XP