Maomao is so favored by people in the highest position in the country that she technically will never have to worry about getting punished by knowing who Jinshi is.
Emperor/Lady Gyokouyo/Lady Lihua: She is their supplier of cultured texts. Makes their nights spicy.
Jinshi: His favorite
Empress Dowager: Approves of Maomao for Jinshi, helped her relieve a guilt
Lakan (highest military official): her biological father, will openly throw hands for Maomao, the dude that can destroy a person's life and career if you done him wrong.
If anything, if Maomao gets punished or god forbid, die. The entire country might even collapse.
Getting Maomao kidnapped can also cause a full out war.