Option 2: After the expiration of the original 9-month mining right, TZVC can exchange for an extension of the mining right for 3 months, but after replacement, TZVC Will be automatically invalidated;
方案二：原9个月的采矿权到期后，TZVC可以换取延长3个月的采矿权，但更换后，TZVC将自动失效；