The Little Doctor Girl from the First Assistant's Family

[The full text is free, the male and female protagonists are both pure] Su Qingqing transformed into a young widow who failed to have a wedding, and was bound to a conquering system to save her life. What, the first task is to conquer her mother-in-law who has a grudge against her? It doesn't matter, as long as you think fast enough, there is no wall that cannot be conquered. No, she just relied on her medical skills to earn money to support her family, uh, and also supported her brother-in-law to go to school. Her mother-in-law, who originally disliked her, immediately became kind to her. I thought that with experience, I would be able to handle the following tasks easily, but why are the naughty children of the wealthy merchants, the princess of Yujie County, and the cold prince... Why are they more difficult to handle than the other? Also, why did the always considerate and gentle brother-in-law change his gender? Chasing after her to repay the favor. Let's repay this, she doesn't mind being hit with money! Lin Runqian: "Qingqing, I am penniless, so I can only repay the favor with my body." Su Qingqing: "..." The chief minister of the current dynasty, the legitimate grandson of the extremely wealthy Jiang family, the legitimate son of the Nanwang Palace... Which identity should be thrown out and not be held up and worshiped? Calling her a poor doctor in front of her?