In the new GYM, three teams each have 6 Pokemon each. In the defense bonus, defense time and defeated Pokemon made it possible to get 100 pokecoins at the maximum, and 10 poker coins at minimum. However, it got no star sand. Instead, I got to get it by raising a clue. But the biggest change is the reward at GYM Battle. If you defeat 1 other Pokemon of another team in GYM Battle, you gain 450 experience points and 500 sand stars. If you want to earn star sand from now on, attacking will become important.