The protagonist who transmigrated into a period novel as the neglected eldest daughter of the Guan family. She died from overwork at age 23 in her previous life as a senior at Tongcheng Key Normal University, majoring in mathematics with a minor in programming. She developed the Happy Learning live-streaming tutoring system. In the novel, she is starving and mistreated by her family but uses her knowledge of the original story to outsmart them, switching marriages with her sister to avoid a tragic fate.
