1639 AD, the twelfth year of Chongzhen. In this year, Zhang Xianzhong rebelled against the Ming court again in Gucheng. In this year, Li Zicheng led thousands of troops out of Shangluo Mountain. In this year, Huang Taiji sharpened his sword outside the pass, intending to sweep the Central Plains. In this year, the Ming Dynasty was in turmoil, step by step towards the end. And this year, He Xuan traveled through this world. With an emotional system, he became stronger step by step. With one punch, thousands of Qing soldiers were destroyed. One sword is invincible in the world.