After leaving Laboratory No. 2,
Lin Xuankong went straight to You Rui's office beside the Gene Warrior training hall, only to find Han Liu, Han Bao, Ma Long, and the other Gene Warriors gathered there.
When Lin Xuankong arrived, You Rui was the first to rise to her feet. She said,
"Director Lin, something happened. I originally sent Ma Long to find you, but when he heard you had gone to Laboratory No. 2, he decided not to disturb you."
Lin Xuankong glanced at everyone in confusion. "What happened that brought everyone here?"
You Rui pointed at several flags on the table, her expression grave. "I had planned to use flag signals today to help Han Liu ask about his sister Han Yu's recent situation, but then I saw that Shelter No. 1 had sent a flag signal."
Ever since Stone City and dozens of other major cities had been reduced to ruins, while communications base stations and vast numbers of satellites had been destroyed, the shelters amid Stone City's ruins had returned to the ancient method of flag signaling for communication! Though this method was affected by weather and nighttime, it remained quite useful during the day! Moreover, because most shelters in Stone City had fairly tall residential buildings, they could still use flag signals to convey most messages between shelters and communicate with Shelter No. 1. After all, most Dragon Elephant Gene Warriors possessed extremely keen eyesight. Even if they could not compare with Gene Warriors like You Rui, who had awakened the Special Genetic Ability True Sight, they could easily see flag signals dozens of kilometers away!
As for Han Liu's sister Han Yu, after Han Liu and the others returned to Shelter No. 36, You Rui had once contacted Shelter No. 1 with flag signals to