The Chen family had been tomb raiders for generations. By the Wanli era, the family had long since fallen on hard times, until one day Chen Yanqiu's friend dug a wooden chest out of his ancestral home. From that moment, a secret buried underground for 1,700 years was uncovered, and Cheng Yanqiu's career as a tomb raider officially began. On his first trip into the Mausoleum of Huhai, he accidentally broke a seal that had lasted a thousand years... What connection did this tomb have to the Mausoleum of the First Qin Emperor? How many more secrets lay buried beneath the Qinling Mountains? Where exactly was Genghis Khan's tomb hidden? And what was buried deep in the Ailao Mountains, far away in Yunnan's Provincial Administration? Legend has it that at the end of the Western Han dynasty, a troop of imperial guards mysteriously vanished here. What happened to them, and why did they enter these thousand miles of "Mountains of Sorrow"? Cheng Yanqiu himself would uncover all the answers...