Da Qin, at the Beginning, Wiped Out the Yan Kingdom and Became the Emperor for Eternity

A young man in the 21st century accidentally traveled to the Warring States Period and became the fourth son of King Qin Yingzheng. However, this Great Qin is different from the historical Great Qin... This continent is called Kyushu Continent, and almost all countries in history are on this continent. Qin, Han, Sui, Tang, Song, Yuan, Ming and Qing. And there are many Jianghu sects, such as Zhuzi Baijia, Bad People of Tang Dynasty, Wudang Zhang Sanfeng, Ancient Tomb Sect Xiao Longnu, etc...