Alright been a slacker for a while and I've decide to finally contribute.
Whilst on the quest "The Secrets of Guo-Lai" (The Secrets of Guo-Lai - Quest - World of Warcraft)
I came across a great exploit that will surely get you honored with The Black Prince in no time. In order to do this you will first need these requirements;
REQUIREMENTS
HONORED with the GOLDEN LOTUS
The quest "The Secrets of Guo-Lai"
How it Works:
Each time you do this quest 12 mobs will spawn per person in your group. These mobs reward you with 11 reputation with the Black Prince each.
This means:
By yourself - 132 rep every 5 mins.
2 People - 264 Rep every 5 mins.
3 People - 396 Rep every 5 mins.
4 People - 528 Rep every 5 mins.
5 People - 660 Rep every 5 mins.
Step 1. Try and gather as many people whom are eligible for this quest.
2. Enter Guo-Lai halls and speak to the Pandaren that will escort you to the downstairs room.
3. Attack the shielded Mogu NPC (he won't take damage) He'll soon start to summon 2 mogu's every 10 seconds (Per person).
4. These Mogu's take an increased amount of damage + the Pandaren will you kill them. Make sure to tag them before they die (Otherwise no rep).
5. Each Mogu Rewards 11 rep (Standard). A total of 12 Mogu's will spawn per person.
6. After all the Mogu's Have spawned. Everyone run back to where you first spoke to the Pandaren.
7. Everyone but 1 person abandon your quests. (If you are soloing, you'll have to fly back to the quest giver, which is why I recommend at least 2 people doing this)
8. The person that didn't abandon now shares the quest. Make sure that everyone has gotten the quest again.
9. Repeat
Also, sorry if this is a repost, i've looked through other websites as well as this one to see if this has been posted, I couldn't find anything.
Enjoy (: