The Heavenly Book of Zhenguo

After the protagonist travels through time, he awakens to the Heavenly Book of the Kingdom, which can be upgraded through "gathering people's hearts", "pacifying troubled times" and "unlocking inheritance". Its functions include: analyzing skills, deducing strategies, summoning divine soldiers, consolidating national fortunes, opening up territories, communicating with ancient heroes, using the Heavenly Book to analyze poisonous weeds and ores, and refining body tempering potions. Break through the warrior realm within 3 days, slap the son of his legitimate mother in the face, and regain his mother's relic, a jade pendant containing the ancient remnant soul. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.