Hello! Please I need an urgent visa.

I think you should apply from the embassy directly. There are rush and express services. If you use rush service, you will get it on the same day when you submit your application in the early morning. If you use express service, you will wait 2 to 3 days. Of course, you should pay extra money for the rush and express service. And I don't know if you have to be allowed by the embassy for the rush or express service. Some Chinese embassies require that the applicants should gain permission by the embassy when they choose rush or express service.