On ep 6, I don’t get it when shi yu texts shi yan after confession at night about expressing feelings without…
So the message that shuyi sent read I think you are very busy. She also said to read the first three words of the previous message which means I miss you.
It hasn't finish filming yet. They probably can finish filming in March. So most likely it will air next year but if we're lucky and they finish post production faster, we can see it by the end of this year (not likely though).
He's the director for Harmony Secret.