Revenge by the Rules

In her past life, Zoe Shaw tried to stop Stella Sommers from replacing black pens with pink ones before Gaokao. Ian Rivers pushed her to death. Reborn before Gaokao, Zoe secretly prepares a black pen. Stella's act leads class to use pink pens. During Gaokao, pink pens led to zero grades. Stella suffers mental breakdown, Ian becomes disabled, and other students' futures are ruined. Only Zoe Shaw, who abided by rules, gets into Tsinghua University.