Su Qingyuan, a doctor of chemistry, actually traveled through time after an experiment exploded and became A Yuan, a poor member of a juggling class in the Republic of China. In the past, there was a ruthless leader who forced him to swallow his sword, and in the back, there were riotous bandits who burned, killed, and looted. At the critical moment of life and death, she used plant ashes to stop the bleeding and used saltpeter to make smoke, trying to survive in this purgatory.
Her abnormality attracted the attention of Lu Zhengnian, the most powerful warlord in the North. This man was ruthless and bloodthirsty, and was rumored to be not a womanizer, but he kept her under his wing. He gave her shelter because he was interested in her amazing knowledge of how to make explosives, heal injuries and illnesses, and enrich the country and strengthen its military.
For a time, she became the most special existence around the commander. Others laughed at her for her humble background, but she turned to coal tar to refine medicine and revived an entire battalion of wounded soldiers. The enemy laughed at her for being a female, and the improved artillery shells she designed shook the enemy camp. She was slandered by a fake daughter, and she tested drugs in public to reveal her true colors; despised by foreign ministers, she used chemical formulas at the negotiation table to regain the country's resource sovereignty. Lu Zhengnian discovered that what he picked up was not a poor canary, but an eagle that could fight the sky side by side with him. He wiped out the enemies for her, and she helped him end the separatist regime. In this troubled world full of gunfire, chemistry is her sharpest sword, and the powerful commander has become her only weakness and armor.
