The moment the door opened, the three of us jumped off our beds. Standing outside the room was none other than Master Crystal, who had visited the Midstar Army.

"Master, you're back so soon?" I asked, pleasantly surprised to see him. It was rather unbelievable that Master Crystal had relied only on a single ship to complete his mission so speedily.

"The situation is urgent, so I returned right after I obtained the genetic password to pass through the perimeter. The genetic lock is much more complicated than we had imagined. The genes of two authorized individuals must be used together to pass through. Also, each authorization will only last 24 hours," said Master Crystal tiredly.

"A limit of 24 hours and the genes of two individuals must be used at the same time?" repeated Old Du in astonishment.

"Yes. I already told Master Wind to authorize me and Wind Spirit into their defensive system. According to our plan, our genes will be authorized starting at...