I Transmigrated to the Tang Dynasty and Was Betrothed to Li Chengqian from the Start

[Prosperous Tang Dynasty, bickering couple, doted on by everyone, farming and business, lighthearted comedy, a husband’s long road to winning her back] Su Qingwan has transmigrated!!! The good news: She’s in the prosperous Tang Dynasty, born into a prestigious family, and bound to a “Nation-Strengthening System” that can provide anything she wants. The bad news: From the start, an imperial decree marries her off to Li Chengqian, the Tang Dynasty’s most rebellious man and the future deposed crown prince. Su Qingwan looks at the arrogant, obnoxious Li Chengqian, who’s at the peak of his rebellious teenage years, and gives a cold laugh. Relying on a man? Better to cling to her in-laws! She cures Empress Zhangsun’s breathing illness, presents high-yield potatoes that amaze Li Shimin, and joins Princess Changle in business. In just one year, the emperor and empress treat her like their own daughter, and the court officials all beg her to share some of her wealth. When Li Chengqian finally comes around and prepares to show off his princely authority in front of his fiancée, he discovers that... Empress Zhangsun says, “Gao Ming, Wanwan says the land in the Eastern Palace is perfect for growing watermelons. Go turn it over.” Li Shimin says, “You rebellious son! If Wanwan isn’t happy today, you can forget about being crown prince!” Li Chengqian: ??? Which one of us is actually their child?!