Silly Little Smile

A pair of identical twins, sister Xia Xiaoyu and sister Xia Xiaochen, they are two extremes. One is a sister who is loved by everyone, has unique insights and is a bit resolute, and the other is a submissive sister. They are both studying in class 4 of the second year of Xinyu High School. The elder sister gave the younger sister a task, asking her to fall in love within 3 days~! How will the story develop?