Taking Charge of Dongcheng, Your Economy Exceeds the Sum of the World's?

Chen Yang traveled to a modern feudal dynasty - the Nine Kingdoms, and became the eighth prince in the battle for the right to inherit the throne. Deeply involved in the struggle for the right to inherit the throne, all the princes were assigned a city to manage the city for 10 years. After 10 years, whichever prince managed the city best would inherit the throne. As the eighth prince, Chen Yang had no background in his maternal lineage, so he was not taken seriously by the contemporary emperor Chen Jiangshan. Chen Yang was only assigned to Dongcheng, an 18th-tier city, an extremely backward city. Asking him to use such a city to compete with other princes was obviously perfunctory. Fortunately, Chen Yang is a time traveler and has awakened to the city's rebate system. The wealth created by Dongcheng can be doubled back to Chen Yang. Chen Yang can get rebates on all kinds of expenses in Dongcheng. Ten years later, Dongcheng has become the richest place in the world. The total economy of Dongcheng exceeds the total economy of the world, and the strength of Dongcheng in all aspects has crushed any country, let alone the Nine Kingdoms Court. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.