I Was in Qingguo, and Started Trading with Wild Orangutans.

A prince, but not a prince. Born into an imperial family, his father was the sinister and thoughtful Emperor Qing. If you stay in Kyoto, you can only be a whetstone. After waiting for decades, the prince ascends the throne. Will these feudal princes who participated in party struggles have a way to survive? I don't want to serve you anymore, so you can have fun as you like. Emperor Qing was furious and ordered Li Chengfeng to join the Northern Qi Dynasty as a hostage. Li Chengfeng thus awakened the Trading Heavens System. Trade with the wild orangutan and get the energy amethyst, the sixth-grade guard hammer, and the ninth-grade guard hammer, which can't be killed at all! Trade with Big Big Wolf to get smart medicine, and scare Fan Xian out of his wits. Trading with Yaowang Valley, tens of thousands of tons of medicinal materials were sold at cabbage prices, and the people of Northern Qi ate ginseng as dry food. Trade in the Temple of Technology to obtain light-skeletal mechas and assemble the entire army. The Daqing army simply said it was unplayable. Zhan Doudou: "I know you have made great contributions, but I have already made you the regent. What else do you want? Hey, hey, don't touch my dragon's legs!" Princess of the Northern Qi Dynasty: "How many people do you have at home, why can't you be more restrained? By the way, who is this alien cat-eared girl you just traded?" … This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.