I wonder whether the Chinese Breeze series were discontinued. The last time I checked the highest level was four... and not even that many of the titles released at this level. I wish they could continue further as the series seemed quite enjoyable and effective at the time I honed my basic reading skills... I continued with Sinolingua abridged novels series from the wonderful Pleco collection afterwards. Of course, nowadays we can also use AI technologies for creating both simplified and more complex versions of pretty much any text, but Chinese Breeze were clearly edited by experts on the language aquisition, and no AI can still substitute for that...