Lost Key

When Lin Han, a talented associate professor of archeology but regarded as a "heretic" by the academic community, was urgently summoned to the scene of a murder in the Hall of Supreme Harmony in the Forbidden City, he discovered that the deceased was actually his mentor, Professor Zhang Chengen. Before his death, the old man used his own blood to leave a strange "Hewen" symbol ("", "", "Xuan") and the number "81" on the white marble floor tiles. As the only person who can solve the mystery, Lin Han was instantly involved in a death vortex that spanned thousands of years. He soon discovered a horrifying truth that could overturn the history of five thousand years of civilization: the Tao Te Ching is not philosophy at all! It is an encrypted "instruction manual" for operating the Chinese "dragon vein" (earth energy)! A "Stargazer" organization that has existed secretly since the Qin Dynasty, in order to protect this secret, sent a killer code-named "Lone Wolf" to launch an overwhelming hunt for him. Lin Han, who was forced to flee, must follow the clues left by his mentor - from the underground secret room in Beijing, to the "Three Stone Altar" at Daci'en Temple in Xi'an, to the unknown "Altar Zero" deep in the tomb of Emperor Qin Shi S. He must use the retrograde sequence (3-2-1-0) left by his mentor to solve the huge "formula" created by the original emperor. "Stargazers" are convinced it's a curse. And Lin Han suspected that it might be... The next form of human evolution.