1. Last Friday morning I decided to cancel my Tai Chi and Qi Gong groups for the time being.
2. Friday afternoon the owner of the school/dojo where I teach the groups announced he was closing the entire school for the time being.
3. On Sunday the Berlin Senate (local government body) announced that, among many other measures, all public and private sports venues, sports events and sports groups were being officially banned for the next few weeks.
So that covered the situation fairly comprehensively...
I'm training for myself in the back yard of our tenement house and in local parks (just a short walk or bike ride away).
If (!!) Berlin/Germany is not placed under a total lockdown Italian-style, then maybe in a week or so, when we've got used to the situation, I might lead a few symptom-free students for form practice only in the big local park. Lots of space there, so it would be no problem for us all to train together while keeping 2 to 3 metres distance between each of us. Maybe. Have to see how it feels at that time.