*0 - 19 Fights - White
*20 - 49 Fights - Yellow
*50 - 99 Fights - Orange
*100 - 199 Fights - Green
*200 - 499 Fights - Blue
*500 - 999 Fights - Brown
*1000 - 1999 Fights - Black
*2000 - 2999 Fights - 2nd Dan Black
*3000 - 3999 Fights - 3rd Dan Black
*4000 - 4999 Fights - 4th Dan Black
*5000 - 5999 Fights - 5th Dan Black
*6000 - 6999 Fights - 6th Dan Black
*7000 - 7999 Fights - 7th Dan Black
*8000 - 8999 Fights - 8th Dan Black
*9000 - 9999 Fights - 9th Dan Black
*10000 - 14999 Fights - 10th Dan Black
*15000 - 19999 Fights - Master
*20000 - 49999 Fights - Custom
*50000 - 99999 Fights - God
*100000 - 999999 Fights - One
*1000000+ Fights - Elite

After Elite Belt, the amount of Qi eventually resets at approximately 3 million, making you a White Belt with 0 Qi.

Taken from this thread:
http://forum.toribash.com/showthread.php?t=105823

You don't get any Qi if you lose, so try to win if you want to move up from 20. Cheers.
You get qi regardless of whether you win or lose.