China teams are there just to provide hindrance to KR/JP teams.
Even if they win, they can't leave China and go to Istanbul, basically just KR vs JP for the champions spot
It’s not about whether they can travel to Istanbul or not. This is similar to what happened with global esports last LCQ, riot gave a slot to an emerging region to gradually introduce them to the scene and let them show their talent. The Chinese teams probably won’t win the LCQ, but it’s good to give them some exposure and experience, they could stack up a few wins, it’s possible they will, it’s probably a sign that they’re gonna be a part of Val esports some time soon