In Meg 2: The Trench , Suyin is already dead before the movie’s events, and the film only briefly explains this.

What happened to Suyin in The Meg universe?

  • Suyin survives the first movie, The Meg – she makes it through the megalodon attacks and ends the film alive with Jonas and the others.
  • In Meg 2: The Trench , the story jumps ahead several years and reveals that Suyin died sometime between the two films.
  • Her death is mentioned during a commemorative event/anniversary sequence, where it’s confirmed she passed away years after the first movie’s events.
  • The sequel does not explain how she died: there is no on-screen death scene, no detailed flashback, and no confirmed cause of death.
  • A date is given for her death (around 2021 in-universe), but everything about the circumstances is left deliberately vague.

How the sequel handles her absence

  • Suyin’s brother Jiuming is introduced and steps into a major role, taking over much of the “Zhang family” presence in the story.
  • Meiying, Suyin’s daughter, gets a larger part and her relationship with Jonas (who’s now a father figure) becomes more central.
  • By confirming Suyin died off-screen, the franchise closes the door on her return while keeping her loss as an emotional weight on Jonas and Meiying.

Fan and forum discussion angles

Since the movie never states the cause of death, fans and forums tend to speculate, for example:

  1. Accident or mission-related incident
    • Many viewers assume she died in some ocean-related accident, research mission, or megalodon-adjacent event, because that fits her job and past risks.
  2. Illness or natural causes
    • Others think the choice to avoid details might hint at something more grounded (illness or non-shark-related accident), since the film keeps it off-screen and low-key.
  3. Real-world casting reasons
    • Outside the story, a lot of discussion focuses on Li Bingbing not returning for the sequel (scheduling, career choices, stepping back from Hollywood work, etc.), and the writers solving that by quietly killing off Suyin between movies.

None of these fan theories are confirmed in the films; officially, all we know is that she died sometime after The Meg and before Meg 2 , with the cause left unexplained on-screen. TL;DR: Suyin survives The Meg but is revealed in Meg 2: The Trench to have died off-screen years later. The movie confirms she’s gone but never explains how, leaving the circumstances of her death a mystery and fueling ongoing forum and fan speculation.