About the book: 2021 / Unified information field of the Earth. As it turned out, fortunately for Mikhail, it exists. In his world, he is just a hopeless patient. In this, he is full of strength, enthusiasm and thirst for action. And even though it’s only the eleventh century. What does this matter! In a relatively short period of time, he managed to make friends, rise from serf to governor, and build a city. This world taught him a lot of things that he had no idea about. But he is also ready to gift humanity with what he knows. But he won’t be able to live on his own with the support of his allies. Other people's wealth always attracts those greedy for profit. It just so happened that his town of Pogranichny turned into a desired prey. So what now? Sit and wait, where will the warm greetings come from? These are the pipes! Because the best way to defend is to attack.