[No system + time travel + multiple female characters + struggle for hegemony + cool writing] Protagonist: Tang Ping. The top special forces travel through the eighteen princes of Daxia. Their mother and concubine died young, and they entrusted Northern Liang; they use modern military/industrial/agricultural/geological/medical knowledge + special forces skills; in the face of the decay of Daxia and the prince's power, Northern Liang is barren and full of bandits, bordering Dajin, as well as barbarians from southern Xinjiang, Japanese pirates from the East China Sea, and countries in the Western Regions; a wonderful counterattack. Conquer famous generals and beauties and unify the world.
A very nice book
A very good novel
A very interesting novel