Hidden probability of blind box in sleepwalking mountains and seas

Thousands to tens of thousands of copies. The probability of hiding items will be very low, generally between thousands and tens of thousands. Therefore, if you want to get the hidden items in the blind box, you need to buy multiple blind boxes and have some luck. Blind box is a random delivery game. Its packaging is usually a box that looks like a Rubik's cube, and it is filled with random goods or toys. Buyers don't know what's inside and can't choose what's inside until they open the box.