It is recommended that you submit your visa application one month in advance, but not earlier than 3 months. As the entry validity period of a Chinese visa is generally 3 months, the visa may expire before you leave in case you apply premature. For example, it is best to submit your visa application around June 1 if you are ready to enter China on July 1. Please note that some types of visas are only valid for one month or less, and you may need to apply for a visa about 2 weeks in advance.
