The Mythical Anti-Heaven Summoning System

After transmigrating, Lin Xiao becomes the foolish young lord of a city. Trapped in the body of a fool, he faces poison from his foster brother and contempt from the household servants within, while outside, feudal lords eye him hungrily. Fortunately, all is not lost: I have an against-heaven's-odds Summoning System. From then on, heroes from every dynasty fight at my vanguard, while gods and demons from every realm stand behind me as I unite another world. What could be more satisfying!