Reborn to Work Hard and Grow Strong

The heroine's soul transmigrates into the body of a sixteen-year-old and binds to a System that makes her stronger whenever she works hard. First she throws herself into preparing for the college entrance exams, then into languages. After that, she takes on the military, then diplomacy, then technology. Her legend spreads everywhere. At last, she meets a man who's both smarter than she is and better than her at one particular skill. Little by little, his carefully laid plans make her fall in love.