I finished the Chinese tree!
Took me about 18 month, but I did it :) I guess now I have to take a second lap.
Weird... I, too, just finished it today! Be honest... like me, you already had some grounding in Chinese and then reviewed using Duolingo, right? If not, I'm even more impressed with you... Gong xi, gong xi! Now you gotta go back to China for a test drive. My Duo studies helped so much when I needed to get my friend and me around China with no guide last winter... (Sorry, no hanzi keyboard on this computer.)