The Deepin Desktop Environment (DDE) is Deepin's own desktop written around HTML5 and leveraging Google's Go programming language. The Deepin Desktop Environment is designed to be lightweight while sort of feeling like a mix between Xfce and the GNOME Shell; many GNOME components are utilized within Deepin too. Deepin utilizes Compiz for compositing window management.
I'm running some tests right now of Deepin 2014 compared to upstream Ubuntu 14.04 LTS with a variety of Linux desktop offers to see how the performance compares using DDE 2.0. I should have out some early Deepin 2014 benchmarks on Monday. Anyhow, for those that have yet to try out Deepin 2014, embedded below are some fresh screenshots.