What does the Contract mean in

It’s a feature that can make you a new skin:
1. If you have more than 3 skins in your inventory, and you have no idea to do with them.
2. Go to “contract”, put at least 3 skins in to the contract.
3. There is value range for the new coming skin, you have a chance to win a higher value than the total value of those skins.
4. After clicking the “confirm”, those skins will mix together and finally come out a new skin.
5. Those skins will disappear from your inventory forever if you had signed the contract for a new skin.

In a word, “Contract” is a place that can provide you an extra chance to win.