Transmigrating to the Three Kingdoms and Summoning Officials and Generals from Every Dynasty

[System + farming + summoning] Liu Cheng transmigrates to the end of the Han dynasty and gains a System that lets him summon historical figures. First he summons Yue Fei, then recruits Lü Bu. Every summon brings him a new talent. He builds up his strength before the warlords vie for supremacy, secures his territory, and then begins facing off against exceptional heroes from every era!