The capital of the Yun Dynasty - "Lingxiao City" is suspended above the sea of clouds and is maintained by ancient technology. Its nine-level cloud rank system represents status by the color of clothing and the number of cloud patterns.
The protagonist of the novel, Yun Ming, has been smart since he was a child, and has been given one opportunity after another. Through studying cloud mechanics with great concentration, he has become a highly skilled cloud pilot. The only thing his parents left him was a red sandalwood token. In fact, he was the only son of the former eldest prince who was demoted and killed. Yun Ming survived because the family manager risked his life to protect him. God arranged for Yunming to have many opportunities. After uncovering the prince's rebellion, he entered the court and became a high official. In the extremely severe environment of open and covert fighting, and the help of his aunt Yunqing and a group of cronies, he took the Yunji Division and the six chief officers under his command. He also unified the large market, made the people rich and the country strong, created the Yunji serial crossbow, expanded the territory, and created the Yunji prosperous age. The story combines many elements such as technology, mystery, fantasy and power checks and balances.
