I Have Superpowers, So It's Only Natural for the Empress to Become My Queen

[Multiple heroines + invincible protagonist + no System + lighthearted comedy + decisive and ruthless] When special forces soldier Jing Xi opens his eyes, he finds himself and his vehicle on an ancient battlefield! After he shoots and wounds two people, the commander-in-chief of Great Qi, Prince Qi Yan, asks if he can help kill the enemy's commanding general! Jing Xi readily agrees, but demands that the other side marry him in return!