The Deed of Yuan Tong

The peace of the extraterrestrial cave fortress "The Eye of Shen Yuan" was broken by the intrusion of a seriously injured exiled nobleman named Ye Chen who was holding an ancient token. As an ordinary librarian of the fortress, Ling Su, due to his innate super perception, noticed in Ye Chen an abnormal resonance with the energy core "Eye of the Abyss". As the protective barrier of the fortress began to weaken for unknown reasons, the water element became restless. In the process of tracing the truth, Ling Su discovered a secret passage in ancient books that connected the ruins of an ancient underground civilization - the "Tunnel of Tears". In order to save his homeland and unravel the mystery of Ye Chen's life experience, Ling Su teamed up with this unwelcome "stranger" and entered the dangerous ancient ruins. Not only did they have to face the ancient guardians who had awakened in the ruins, but they also had to deal with the suspicion and obstruction of the conservative faction within the "Eye of the Abyss". They finally revealed a shocking secret about the rise and fall of the two civilizations, and decided the future of everyone with a new "Mirror Contract".