Yeah, Lu Guangzu surprised me at the Aussie Open. He seemed to have stepped up his game, timing his attack well with good follow up, generally able to string his shots together better with fewer loose shots and mistakes. Indeed, not only Sun Jun (who is more focused on Shi Yuqi), I believe Qiao Bin too who is training the CHN MS full-time is doing a very good job, for Zhao Junpeng, Li Shifeng, Wen Hongyang, etc.
Btw, I won't be surprised Li Mao is working behind the scenes, though little is heard of him for quite some time. I believe, it's a matter of time not only SYQ and LGZ but also, my pick, Li Shifeng, esp, et al are poised for a major breakout.