When to apply the visa?
GOV.cn Friday, August 26, 2005

The best time to apply for your visa is one month before your departure. The visa is normally good for entry within 90 days of issuance. Single-entry visa is usually valid for a 30-day visit, which means the visa is only good for 30 days after your entry date.

 
Editor: Chen Feng
Source: Beijing.gov.cn