They had been underwater in the blue hole for nearly three hours. If Gu Nianzhi hadn't arrived to bring them extra oxygen tanks and then also used her own strength to get Huo Shaoheng and Zhao Liangze out the shackles of the electric fence, Huo Shaoheng knew he would probably have been doomed.
He Zhichu sighed with great relief when he saw Huo Shaoheng and Gu Nianzhi finally break the surface. His long arms quickly rowed the boat towards them, then he helped Huo Shaoheng hoist Gu Nianzhi onto the lifeboat.