To upgrade competitively, you can only upgrade to competitive level 4 (intermediate level 0) after reaching competitive level 3.

After that, you can upgrade to intermediate level 4 (advanced level 0). Advanced level 4 (Master level 0)

Master level 4 is the highest level

Intermediate room experience has been improved to a certain extent

Advanced level has a greater improvement than intermediate level

If you win a game at Master level, you can get about 50. If you fight against a weak player, you may lose more experience than you win