Fanfic of Mu Guiying in Command

I watched the 2012 version of Mu Guiying on Douyin. I feel that the nursery version of Mu Guiying is too handsome. I want to read fanfics, but I can't find it on Tomato. I have no choice but to grow my own food. The heroine is Mu Guiying's cousin Mu Wanying. She is a good accountant, good at martial arts and medical skills. She is a good partner of Mu Guiying. She will not slander Mu Guiying and Yang Zongbao. She can write a little bit about emotions, but in the end there is a high probability that she will have no CP and focus on her career. A serious introduction: I am Mu Guiying's cousin, Mu Wanying Born in Muke Village and raised in Border Pass. I have two obsessions in my life: In arithmetic, I have to settle every account that passes through my hands; Also, my sister Mu Guiying who protects me. When she took command and went on an expedition, I took charge of the money, food, and wounded soldiers of a hundred thousand troops for her. She kills the enemy in front of the battle, while I count all the food and fodder behind the scenes, heal the wounded and prolong life, and eliminate the spies. The world praises her as the God of War among girls, but they don't know that every chance of her winning has already been in my account books and prescriptions.