The series has 12 styles, including 10 regular styles, 1 small hidden style and 1 large hidden style. The probability of getting a regular style is about 9.69%, the probability of getting a small hidden style is about 2.08%, and the probability of getting a large hidden style is about 1.04%, that is, in every 96 pieces, 2 small hidden styles will randomly replace 2 regular styles, that is, in every 96 pieces, 1 large hidden style will randomly replace 1 regular style.
