She Is Actually the Legendary E in Interstellar

The female protagonist is called Shi An, and will be renamed Shi Yan later. She has a single arrow without CP, is a strong woman, and her second gender is E. It is similar to an interstellar background, a micro-group portrait, a military academy, and the enemy is the Zerg, but the Zerg are not entirely bad guys. The heroine is not strong from the beginning, she needs time to grow and not abuse the heroine. There is a golden finger (left by her parents)