When you reach lvl 54, there will be a lightbulb that begins your quest of obtaining a new skill, Final Charge.
1) Talk to Mr. Do in Mu lung. Then talk to Jin Jin after.
2) Collect 50 Straw Dolls, 50 Wooden Dolls, and 100 Broken Piece of Pots, and 500k Mesos. These drops can be found from the following monsters:
Straw Target Dummy (Lv 50) - Straw Doll
Wooden Target Dummy (Lvl 51) - Wooden Doll
Jar (Lvl 47) - Broken Piece of Pot
3) Return them to Jin Jin. He'll give you an etc scroll. Double click on it and drag the ink onto it until the scroll is complete. Then talk to Mr. Do again.
4) Go speak to So Gong at the Dojo. Collect 100 Bellflowers for him from the monster Bellflower Root (Lvl 53).
5) Go outside of the Dojo and click up on the Green Flag at the right side. Keep going up until you reach the top.
6) Talk to Mu Gong and fight him. Be careful he render you powerless with seduce. After killing him, talk to him and he'll give you a password. For those who never read what the npc tells you and click to fast, the password is at 4:56 of the video.
7) Go to the last map of the Practice Field and find the red pole with the word 'Entrance' on it. Click on it and type in the password exactly (the password is case sensitive).
8) Talk to the Shadow Warrior and fight him.
9) Return to Mu Gong and talk to him.
10) Go back to Lith Harbor and speak to Tru. He'll tell you to return to Rien. Speak to Lilin and she'll award you with the Final Charge Skill. =)
*If you do not know where any of them maps or monsters are, I suggest looking them up here
**PLEASE DO NOT PM OR WHISPER IN GAME AS TO HOW TO REACH THE MAPS. FROM NOW ON, I WILL BLOCK YOU AND PLACE YOU ON MY BLACKLIST IF YOU WHISPER ME OR CHAT ME, ASKING WHERE A MAP IS LOCATED. LOOK IT UP ON THE WEBSITE, IF YOU DO NOT KNOW WHERE IT IS. DON'T BE SO LAZY. -_- [12/30/09]