Obviously, this pair is getting jaded playing non-stop in a desperate attempt to move up the ranks as quickly as possible during the OG QF period, little time left starting from scratch. And all that is beginning to take a toll on them, physically and mentally. I think they need a short break to do some serious systematic training but can't afford the luxury. Too bad they are caught in such a pressing, tricky situation. In retrospect, CBA should've split Liu Cheng and Zhang Nan much earlier but I guess they have to give some face to Liu Cheng who is, after all, a world champion once upon a time, not to mention a surprising lack of depth in CHN MD.