I needed to go to the Library to see Jean regarding a quest. But I bumped into Noelle first before I saw Jean. Noelle was stressed out over the upcoming knight exam. I suggested she go to Liyue harbor for a change of scenery and told her I'd meet her there.
After she left, I went to Jean and left with Kaeya and Klee.
Noelle has six months before the test. I should be good if I meet her there before then, right?
(I had Noelle's & Tignari's quest interfere with the event quest)

