This is because the lottery center will not make any marks on the lottery. Therefore, the grand prize of scratch music is not marked.

Marking lottery tickets by lottery center will cause unnecessary speculation and doubt, which will affect the fairness and transparency of lottery tickets. Therefore, the lottery center will take some measures to ensure the fairness and transparency of the lottery.

Scratch music is an instant welfare lottery with a return rate of 65%. Scratch music is issued for the purpose of "helping the elderly, helping the disabled, saving orphans and helping the poor", that is, buying and opening.