Good Friday

This is my first time to spend a "good friday" at a christian group, and learn what exactly it is... :p I was told in Germany, people eat only fish on this day, so we had a "Fischessen" in the church. The two German women behind me said, they knew their first Chinese student here in Tuebingen in 1933. Now they are over eighties. Karfreitag Today I feel my German is very bad, but my Putonghua is more fluent. I need to train myself to be able to switch the language as quick as I wish. :p