Since I got back to the game for the collab I decided I may as well play the story I have not played.

I started the mission "A New Venture on the Eighth Dawn" since is the next mission avaliable and...TingYun is there. And...Im a bit lost since is the next direct episode on the story map.

I guess there is some event or sidemission that precedes this, but...which one? What should I play to see what is doing Tingyun there?