I am a Chinese and I am learning German on Duolingo in English and sometimes learn English in German. I am on my 561 day streak today and I find it is very usef

I am a Chinese and I am learning German on Duolingo in English and sometimes learn English in German. I am on my 561 day streak today and I find it is very useful. Before practice I can learn the related grammar and the newly added stories feature and tinycards function is of great help(glean words in context).