Japanese and Mongolian citizens do not need any visa. For people from other countries, as any entry to China, participating to Dakar Series China Rally require a Chinese visa.
You can make the application in your country of residence. To apply for visa, you are required to possess valid passport with date of expiration not earlier than 6 months after the finish of rally, with one empty page for the visa applied.
Each participant is responsible to apply for visa himself. Visa fee is borne by participant.
In order to facilitate visa application process, Organizer provides everyone with invitation letter.