At level 80, Master Hight at the Peak of Serenity gives you the quest: Continue Your Training: Master Hsu.
Roll down to the training grounds and find Master Hsu, a male tauren monk. Tell him that you wish to challenge him. He will then walk to the middle of the training grounds while he says "Some enemies gain most of their power from the weapon that they wield. Take that away, and their power over you goes with it." As he stops and faces you, you can /bow to him. He will then /bow back, turn hostile, and run towards you. During the fight you will get the warning "Master Hsu prepares a hard-hitting swing with his polearm. Disarm him before he can complete it!". You should then use Grapple Weapon on him. When defeated, Master Hsu says: "Your power is impressive. I admit defeat."
When you hand in the quest to Master Hight, you get Enlightenment again. This buff gives you 50 % more experience from quests and kills. You can also choose between three staves; one for healing, one for damage and one for tanking.
After handing in the quest, a daily quest becomes available: Practice Makes Perfect: Master Hsu. Enlightenment can stack two times, so the second quest will give an additional hour. Never do more than 2 quests at the same time though!
32 days to go!