Recasting the Ming Dynasty Dare to Ask the Sun and Moon to Change the Sky

I am just an ordinary modern person who accidentally traveled through time and became a soldier in the Battle of Salhu. Relying on vague impressions of history, the crisis was barely stabilized and the urgent need was solved. I wanted to use the ancient and modern exchanges to continuously deliver grain and grass to help the army regain Liaodong. But at this moment, the ability to travel is actually restricted by the rules of heaven. There are no plug-ins, no extraordinary knowledge, just a mortal, trapped in this post-apocalyptic Ming Dynasty. How could Ming dare to change the sun and moon to a new sky in such a dangerous situation?