Secret Level 50 Quest

There is a "hidden" quest that becomes available once you reach level 50. The quest is long and requires a lot of flying around the world, but the experience is very good (142k). To start the quest, you'll have to visit the elder at thousand streams in the northwest corner of the map. Here is how you complete the quest (with credit to http://pwi-forum.perfectworld.com/showthread.php?t=153302&highlight=bloody+jade)

"Hidden Quest": Scarlet Gate
1. Speak to the Elder of the Streams (130, 858) Thousand Stream City
2. Go to the Scarlet Altar (104, 513) Quest will auto-trigger the continuation when you get close to the actual stone. Must be standing STILL in order to get the quest continuation
3. Report to the Elder of the Streams (130, 858) Thousand Stream City
-Collect 5 Bloody Jades (Farmable material. Located around [104, 513])
4. Report to the Elder of the Streams (130, 858) Thousand Stream City
5. Speak to the Etherblade Arena Manager (450, 879) Etherblade
6. Speak to the City of the Lost Arena Manager (245, 639) City of the Lost
7. Speak to the City of the Plume Arena Manager (336, 432) City of the Plume
8. Speak to the Archosaur Arena Manager (531, 630) South Archosaur
9. Report to the Elder of the Streams (130, 858) Thousand Stream City
-Reward (Gold: 85200 Exp: 142000 SP: 32370)

Nice. I just turned 50 too lol. Will check this out, thanks!