Su Nian is in Class 7, Grade 2, Qingxi Middle School, and her grades are third from the bottom. The head teacher said she didn't work hard, the neighbor's aunt said she wasn't good at studying, and even her own mother sighed. Only Lu Shian knew that she went to the tea garden at five o'clock in the morning every day to endorse, stumbling but never admitting defeat. As a provincial competition gold medalist, Lu Shian decided to use his own memory method to help her. He taught her how to memorize historical years through image association, and used the tea ceremony method of "harmony and respect for peace" to cope with test anxiety. Su Nian's resilience was fully activated, and his score went from last to mid-table. But gossip began to spread in the town: "Is the boy from the Lu family in love?" "Did the daughter of the Su family copy it?" The adults of the two families couldn't care less, and Lu Shi'an was warned to keep their distance. Su Nian gritted his teeth, worked alone at night, and finally made it into the top fifty of his grade. On the day of the celebration, she found an old photo album in Lu Shi'an's study - in the photo, her mother and Lu Shi'an's mother were standing under the same camellia tree, with a line of words written on the back: "If you keep thinking, there will be echoes." She didn't know that what Lu Shi'an guarded was never just her achievements.