Mystery Box System

When the quantity of cups reaches 10, users will get a random Mystery Box. The factor which affects the quality of Mystery Box is the luck value of each sneaker.

When open the Mystery Box, you will need some VST as the gas fee.There will be Parts and VST inside the Mystery Box.

Quality	Open Time	Base Cost	Boost Cost
wooden box	1H	1	0.6
bronze box	2H	1	1.2
silver box	6H	1	3.6
gold box	12H	1	7.2
diamond box	24H	1	14.4