The processing time of visa invitations for foreigners in China may vary due to various factors. Generally, it is recommended to start processing 1-2 months in advance.
At present, the processing time for invitation letters is about one month. Two weeks before receiving the invitation letter, you can prepare the application materials and make an appointment for visa application.
After receiving the invitation letter, you can immediately mail the materials to the visa center to apply for the entry visa.
But to avoid unexpected situations affecting the itinerary, it is best to plan and prepare relevant materials as early as possible, consult relevant departments or units for specific processing time and requirements, and apply according to regulations.