To find out why Lin Haotian left sixteen years ago, his son sets out on a journey to explore the "bottleneck." But no one could have imagined what awaited him: one missing skeleton among sixteen, a horrifying eight-stemmed snake vine, hallucination flowers that threaten lives, and an exit from the world that seems almost unreal. What lies beyond the bottleneck? What exactly did Lin Haotian discover sixteen years ago? The story is thrilling, with twists that build on one another, and plenty to ponder.
