History + two male protagonists + intrigue. In the context of the war between Mongolia and Song Dynasty, the story revolves around military supplies kerosene. Ezhou besieged the city, and the fire oil used to protect the city was transferred to water. Xie Ling'an, a junior official, is chasing the murderer in a desperate situation, and is shocked to find that the stolen object is actually the original liquid of the city-destroying weapon "Shocking Thunder"! Caught between corruption and war, he vowed to regain the last glimmer of hope for the Song Dynasty.
It's so beautiful and the plot is very engaging.