Zhang Lan, the chief test pilot and oceanographer of the modern top deep-sea submersible, was challenging the "Challenger Deep", the deepest point of the Mariana Trench, when the submersible was drawn into a space-time rift by abnormal undercurrents on the seafloor, directly smashing through the Tang Dynasty royal dragon boat that was holding a sea ceremony, and floated in front of Li Shimin. With his ocean knowledge that transcends the times, the high-tech equipment in the submersible, and the [Ocean Overlord System] that awakened in the mid-term, Zhang Lan was shocked to be called the "Son of Poseidon." Not only did he help Li Shimin develop the Maritime Silk Road, but he also relied on system mission rewards and personal charm to "capture" Li Shimin's daughters one by one, becoming the strongest consort in history, and eventually led the Tang Dynasty fleet to conquer the world's oceans and establish an empire on which the sun never sets.