Why hasn't His Highness written a letter of divorce?

Jiang Qingning traveled through time, woke up and turned into a little fool who had neither father nor mother love, and was used as a stand-in to marry the ailing sixth prince Xiao Che.System: "Your task is to fall in love with Xiao Che and make him fall in love with you." Jiang Qingning: "..." He just wants to be divorced.In order to be divorced as soon as possible, Jiang Qingning ruined Xiao Che's date with his sweetheart, knowing that Xiao Che didn't like her, she deliberately confessed to Xiao Che, and chased Xiao Che's bridal chamber just to make Xiao Che hate herself.But one month passed, two months passed, finally several years passed, Xiao Che was about to become emperor, but he still didn't write him a divorce letter.Jiang Qingning was in a hurry, and finally couldn't help but want to ask, when will you write the letter of divorce, Your Highness?Who knows, Xiao Che suddenly hugged him into his arms, and said affectionately: "From now on, you will be my queen, okay?" Jiang Qingning: "???" : Sweet Texts Traveling Through Time and Space System with a Soft Spot┃ Search Keywords: Protagonists: Jiang Qingning, Xiao Che┃ Supporting Actors: Little Chopsticks, Feng Ying