I think it requires 50000Qi.

White Belt: 0-19 Matches
Yellow Belt: 20-49 Matches
Orange Belt: 50-99 Matches
Green Belt: 100-199 Matches
Blue Belt: 200-499 Matches
Brown Belt: 500-999 Matches
Black Belt: 1000-1999 Matches
Second Dan: 2000-2999 Matches
Third Dan: 3000-3999 Matches
Fourth Dan: 4000-4999 Matches
Fifth Dan: 5000-5999 Matches
Sixth Dan: 6000-6999 Matches
Seventh Dan: 7000-7999 Matches
Eighth Dan: 8000-8999 Matches
Ninth Dan: 9000-9999 Matches
Tenth Dan: 10000-14999 Matches
Master Belt: 15000-19999 Matches
Custom Belt: 20000-49999 Matches
God Belt: 50000-99999 Matches
One Belt: 100000-999999 Matches
Elite Belt: 1000000+ Matches

^Not sure if this is correct.