Trilogy Part 1: White Cage The elder sister attempts a self-binding and vacuum bag challenge, failing to escape and resulting in her death. The narrative features extensive descriptions of asphyxiation and possesses a strong logical structure. The full text is 18,000 characters. To save effort, it will not be divided into multiple chapters. If you enjoy themes of suffocation and bondage, this series is the pinnacle of its genre. Trilogy Part 2: Black Cage The younger sister inherits her elder sister's will and embarks on a similar path of no return. She employs more complex self-binding methods and a double-layered vacuum bag, complete with full silk stockings and a latex hood. With her arms restrained and a self-controlled vacuum bag, she pushes herself to the brink. Can she escape? Trilogy Part 3: Red Cage Lin You, a distant relative from the wealthy Jiang family, witnesses the deaths of the Jiang sisters and becomes ensnared herself. This third installment escalates the elements to a more extreme level, featuring an underwater vacuum bag, extreme spread-eagle restraint, and multiple bindings with tape and plastic wrap. In the face of unforeseen circumstances, can Lin You escape alive?