In 557 AD, Yu Wenhu forced Emperor Gong of the Western Wei Dynasty to settle in Zhou Dynasty. Soon, Yuan Kuo was killed. In the same year, Yuwenjue was called King of Zhou and established the Northern Zhou Dynasty. He was promoted to Grand Sima and granted the title of Duke of Jin. In 559, Yuwenjue was deposed. Afterwards, Yuwen moved to Otsuka Prime Minister (the prime minister at the time) and supported Yuwentai's other son Yuwenyu as Emperor Zhou Ming. Yu Wenyu was gentle, elegant, resourceful, and quite talented in managing state affairs. The Northern Zhou Dynasty gradually stabilized, the economy developed rapidly, and the country was peaceful and peaceful. There is a folk legend that there is a family in the South China Sea who made a fortune by catching pearls. Pearls were popular, and a large number of wealthy merchants gathered in the South China Sea. As for the origin of pearls, it is said that there are sharks who are like fish and humans, good at swimming, and their blood and tears can be turned into pearls. The third prince Yu Wenjue was forced to travel south to stabilize the South China Sea and look for the sharks...