My Supermarket Leads to Ancient Times, and I Met a Down-And-Out Princess at the Beginning

After marrying a wife with a high-priced gift, the money was given to someone else and ran away. Zhao Yubai was about to start the mode of cleaning up the household registration book. The other party's family compensated Zhao Yubai with a "troublesome" small supermarket in the backyard of the mountains. On the first night after taking over, Zhao Yubai discovered a huge secret. The backyard of the supermarket is connected to another world! The Dayun Dynasty suffered from continuous natural disasters, the old emperor was fatuous, and the 19th Route Army rebelled against the king and entered Zhongcheng of Cloud City. The emperor fled westward with the prince and princess. When Zhao Yubai first came to Dayun, he met an old man who claimed to be the emperor and took a fancy to the bread in his hand. Old man: Give me the food in your hand, and I will grant you the title of King with a different surname! Zhao Yubai: Haha. Old Man: Well, then I will betroth my princess to you. Zhao Yubai:! ?