Immortality: My Ally Behind the Scenes Is the Time Traveler

Modern souls Lin Wei and Yun Zhao accidentally traveled to the ancient Dayin Dynasty, and discovered that they were burdened with the mystery of immortality. Faced with the confusion of time and space and the potential danger brought by immortality, they decided to hide behind the scenes and hide in the mist-shrouded Biluo Valley. With knowledge and wisdom beyond the times, they quietly spread the spark of civilization: improving farm tools, promoting medical skills, and enlightening ideas. They cultivate loyal "Hidden Star Guards", support talented craftsmen, compete with wise scholars, and guide this ancient dynasty to quietly transform into modern civilization step by step. However, the great wheel that drives history is bound to stir up undercurrents. The secret of immortality attracts prying eyes, the wave of change is blocked, and ancient taboos seem to be awakened... When a strange star that does not belong to this era shines in the night sky, Lin Wei and Yun Zhao understand that they are not only breaking the shackles of the times. The gaze from the darkness has been cast, and the truth of the world is far beyond imagination. This long journey that begins in seclusion will eventually lead to the amazing mystery at the end of time and space. Can they uncover the source of immortality and face the "door" to the unknown while protecting each other?