[Notice]  GAME SETTINGS:
Upgrading equipment attributes, the first 7 levels have a 100% success rate, and+8 has a 60% success rate.
+9 represents a 10% success rate, and+10 represents a 5% success rate (failure does not degrade or disappear)
Experience multiplier: 5x      Dropping rate: 4x
(~Other details can be found in the game guide~)