The current situation is that the N card devours the SR card without changing the SR card, so the players are not willing to spend the cost to upgrade the best n card, and the breeding garbage SR has no demand and function. When the breeding cost increases, the players are more reluctant to breed, enter the process of umy digging and selling, and umy continues to collapse Restoring n-card swallowing SR can be 100% Sr, which can consume the number of SR cards, promote players to continue breeding Sr, increase the consumption of umy, and the breeding cost can be unchanged or appropriately reduced