Lin Xuan is a wage slave, though a luckier one than most: an all-around scientist of the new era.
Lin Xuan likes to work on his research alone. Then one day, an accident during an experiment with a new type of gunpowder sends him tumbling into the river of time.
When he wakes up, he has transmigrated to the darkest era in Chinese history: the Wei, Jin, and Northern and Southern Dynasties.
Even though Lin Xuan is only the second-in-command of Black Tiger Mountain, with barely more than a thousand men under him, he is determined to defend the Huaxia people, drive out the northern invaders, and restore the land to its former prosperity.
Now that he has come to this world, Lin Xuan has made up his mind: if the Sima clan can handle it, he will handle it; if they can't, he will handle it all the more...
In short, the brutal northern tribes must be wiped out. If the incompetent court dares to meddle, Lin Xuan won't hesitate to deal with them too, or even replace them...
