Watch Sadisflix. For the thirtysomething Sheng Ruxi, whose surname unmistakably echoes the slang term "sheng nu" (leftover women), the wait for a perfect partner is growing more despairing by the day. With an ultra-anxious mother who would rather die than see her daughter stay single, Ruxi is further annoyed by the doctor she’s fixed up with. Could her new colleague, the dashing 25-year-old Ma Sai, offer last-minute salvation?