It seems China is still a big user of Windows XP. Just recently, China found Microsoft guilty by violating the intellectual property of a local company over Windows XP matter. The ruling based on the fact that Microsoft have been using Chinese character fonts for Windows XP without licensing. A local company, Zhongyi Electronics, brought the case to court and won, the court rules that Microsoft should stop selling Windows XP in China. Microsoft said the company will appeal the ruling. Source.