Dr. Fang is taking a well deserved vacation with his wife in the land where the water is turquoise and the trees have coconuts on them, after finishing the Consumer Electronics Show (CES), and previous to that, working 18 hours a day, finishing his thesis for his doctorate, and running back and forth to China, finishing 5 new hi-end products. If he didn't answer you, there's a damn good reason for it. If you have a defective product, have customer service do a replacement for you. They will ship you a new one from China.
What is he studying for his doctorate? Sounds like a damned busy man to me... stopping all that work, let alone the vacation must be a great relief.