"Bai Xiyan's Daughter Multiple Choice" tells the story of Bai Xiyan, an orphan from the south of the Yangtze River who was forced to return to the prince's mansion in Zhenguo and regain her identity as a real daughter. Faced with the opposition from the Hou family and the plot of the fake daughter, she relied on the bound "life multiple choice" system to wisely break through key decisions one after another. Not only did she rely on her wisdom and medical skills to gain a foothold in the family, but she also got to know Xiao Jingheng, a young man from an aristocratic family, and their relationship grew deeper and deeper. The two fought side by side, from smashing the prince's conspiracy to quelling the border rebellion, to defeating the court coup. Bai Xiyan eventually grew up from a bullied country girl to a first-grade lady who opened a girls' school and cared about her family and country. The novel combines the elements of house fighting, system, intrigue and war, showing her dual growth in love and career, as well as the moving legend of protecting her family, country and world.