We Are Almost Unified, the System Says I Am Assisting the Wrong Lord

After time travel, I assisted the King of Zhou and swept across the world. It took ten years, and finally, the last prince in the world, the Queen of Yan, was forced to be trapped in the last lonely city! When I personally lead a hundred thousand Zhou troops to the Queen of Yan's city! Suddenly, the system awakens: The host should assist the Queen of Yan to unify the world! Completing the mission will also reward you with unlimited money, unlimited lifespan, and everlasting health! Faced with such attractive rewards offered by the system! What else to consider? I immediately decided to switch to Yan State! Unexpectedly, in the middle of the night, as agreed, I secretly entered the city with my troops and prepared to surrender! Queen Yan actually thought I was pretending to surrender and planned to ambush me in the city! "Haha! General Zhou, I have already seen through your plan to surrender! I can't believe that the invincible General Zhou would be defeated at the hands of a woman like me! Zhou Wenying, who has unparalleled strategism, is going to die in my hands! It's really, really funny! Someone, shoot me an arrow!"