You misunderstand me, the Triads purchased the Lexcorp weapons from a dirty employee in Lexcorp, but the general idea about them setting up the Triads to take the fall as part of a 'hijacking' is something I can still use given the situation at hand.  The Triads helped get a Shadow into the US, and she rode in on the ship holding the weapons in question.  Jade claimed to be in Gotham to see their mother, Paula, but that can't be the only reason she's there, and Artemis doesn't believe her since there's no way she'd happen to be on the same ship as an illegal weapons shipment, so yeah.  Maybe I'm just overthinking it lol.  The thing is though, the Triads are indeed involved with Lexcorp, it's the Shadows I'm having trouble realistically linking with the rest of them.  The only thing I can think of Jade's there to assassinate someone either for the Triads or Lexcorp or both.