Congrats Lin very interesting crossing:
What you need to once you already back to your own country
1. Put the flasks away from strong light
2. Acclimatize for at least 1 to 3 weeks
3.Than you can remove all the seedlings from the flask
4. Wash thoroughly and remove all the agar residue
5.Keep them moist for a week in a small compotes
6. The seedlings is prone to develop rot just observe accordingly
7. Monitor them, hardening of the leaves actually is a good sign
8. You can spray light inorganic fertilizer once a week.
Good luck and all the best. So far I did for my Brachypetallum very little casualties.
---------- Post Merged at 07:48 PM ----------
By the way you can put over the thin layer of sphagnum moss or over the charcoal.
Above are photos deflasked Paph Brachy and later transfer into individual pot that I was done end of last year and now moss of them blooming size. Just give you some idea.