Jing Yi leaves, and goes about the next week trying to be productive. He keeps up with the GED studies-- he's good at stuffing a lot of information into his head quickly, but fitting twelve years into one is still a lot of hard work.
And he starts to-- deliberately settle in for the long haul. He researches and discovers and acquires earplugs. (Because at this rate he would either end up nocturnal or constantly sleep deprived and that is just not practical for learning and/or living.) He pokes about and makes lists of places he could go and meet people.
He tries to organise a proper memorial table. He tries and-- temporarily fails. Turns out someone had to change how your meant to do it in one of the centuries he skipped. And he will sort it out, sort out which set of guidielines to follow, but-- dealing with a double whammy of grief over the people he has lost and the time and place he has lost can wait at least another week.