Her Ice-Cold Marshmallow

[The simplified Chinese edition was retitled Childhood Friends Are a Trap. Yes, the title isn't great either, but the story is pretty good.] "Stars and light vanish in an instant; passion and blood live on forever." Ten years ago, they competed together and won together. He was her little sidekick. Ten years later, she struggles at rock bottom while he stands at the peak. They are worlds apart. A story about a bottom-feeder turning her life around. * Younger man, male lead has loved the female lead for years, three-year age gap * I'm not in a related field, so please excuse any technical inaccuracies * The competition format is based on RoboMaster; everything else is fictional (XIACHE * A passionate competition story disguised as a sweet romance, or a sweet romance disguised as a passionate competition story. Take your pick. Theme: A tribute to robotics engineers