Liu Bowen found a strange book in the cave, and after reading it carefully, he became a strange man.

Liu Bowen was a famous folk counselor in the early Ming Dynasty and the most famous master under Zhu Yuanzhang's account. Zhu Yuanzhang never called Liu Bowen by his first name in his early years, but regarded him as a teacher, which shows Liu Bowen's position in Zhu Yuanzhang's mind. Of course, in the eyes of ordinary people, Liu Bowen is a generation of wizards who know astronomy above, geography below and astrology below, comparable to Zhuge Liang, the prime minister of Shu in the Three Kingdoms period.

Liu Bowen's success, in addition to his extraordinary talent and hard work, is also attributed to a magical experience in his early years. According to the historical records of the Ming Dynasty, Liu Bowen lived in seclusion in Qingtian Mountain, Zhejiang Province before following Zhu Yuanzhang to conquer the world.

One day, while studying, Liu Bowen suddenly found a gap on the cliff opposite. Liu Bowen walked over and saw that there seemed to be a cave in the gap. So Liu Bowen picked up a stone and threw it at the crack. The gap was smashed into a big hole, just enough for one person to pass through. Liu Bowen went in and found a cave.

When Liu Bowen went in, he found a stone door in the cave with the words "Mountain as the foundation" written next to it. Liu Bowen was very surprised when he saw it, because "base" was his name. Liu Bowen thought, maybe this is fate, so he picked up a stone and knocked on the Shimen, which opened itself.

Inside the stone gate is a stone room with a stone bed, a stone bench, and instruments for alchemy, but there is also a book without a name on the bed. This seems to be a place where hermits live in seclusion. Liu Bowen went to the bed, picked up the book and blew the dust off it. After opening it, he found that all the contents recorded in the book were the contents of Sun Tzu's The Art of War March.

Liu Bowen was overjoyed, took Sun Tzu's Art of War back, carefully studied superb art of war tactics, and finally turned himself into a military wizard who was proficient in the art of war, laying a solid foundation for assisting Zhu Yuanzhang later.