đAccording to the information you provided, I recommend the following novels: 1. "Celestial Trading System: Trading Song Huizong at the Beginning": The protagonist of this urban life novel was in a crisis of not being able to pay his salary. He accidentally obtained the Celestial Trading System that allowed him to trade with characters in the parallel universe and met the historical figure, Song Huizong, Zhao Ji, to trade. The system seemed to want the main character to develop in the direction of an all-rounded male god. The ending could not be missed! 2. [Forceful Trading System]: The protagonist of this fantasy novel, Ji Dang, could make all kinds of transactions through the system. In his eyes, everyone was a walking grocery store. The plot of this novel was not only compact and interesting, but there were also various ideas and methods of buying and selling. It was very worth reading. 3. "The Strongest Merchant of the Myriad Worlds": The protagonist of this Eastern fantasy novel established the Myriad World Exchange by connecting the Myriad Worlds and obtained the Myriad World Trading System, becoming the most powerful merchant in the myriad worlds. This novel not only contained all kinds of divine artifacts and martial arts transactions, but also many complicated transactions between forces. It was very rare. The above is my personal recommendation. I sincerely hope you like it ~