UbuntuKylin 13.04 [64 bit]

UbuntuKylin is an official Ubuntu subproject whose goal is to create a variant of Ubuntu that is more suitable for Chinese users using the Simplified Chinese writing system. The project provides a delicate, thoughtful and fully customised Chinese user experience out-of-the-box by providing a desktop user interface localised into Simplified Chinese and with software generally preferred by many Chinese users.

it is also the official OS of china.