The reason why the stars in Food Wars Rats will be lost after you pay the deposit: Every card has a star attribute. The star rating of a card is an integer, with the lowest being 0 and the highest being 15. To increase the star rating of a card, strengthening operations must be performed. Each strengthening operation consumes a certain amount of strengthening crystals or advanced strengthening crystals. The function of insurance money: To strengthen gems of different levels, the success rates are different. Players can increase the success rate of strengthening by choosing four-leaf clovers of different levels. Regardless of whether the reinforcement is successful or failed, the four-leaf clover will disappear. If the enhancement is successful, the gem level will be +1. If the enhancement fails and the gem star level is less than 6 stars, the gem star level will remain unchanged. If the gem star rating is greater than or equal to 6 stars, the gem star rating will be -1. Players can avoid the reduction of gem star level by spending a certain amount of insurance money. When strengthening a card with 6 stars or above (including 6 stars), using a deposit can ensure that your secondary card will be retained if the enhancement fails, and the main card will not be downgraded. Of course, if you successfully strengthen the secondary card, it will still disappear. It is recommended to strengthen it to 8 stars or above before using the deposit.