If my Egyptian husband gets a regular visitor's visa to go with me to China to make sure he will have it on time, and then we need to change his visa either right before going to China or after we arrive to an extended resident visa, will we have problems changing his visa to a visa of the spouse of a working resident if he has already applied for or even obtained a regular visitor's visa? What are the requirements for an Egyptian citizen to obtain a regular visitor's visa to China, and how long does it give him in China?

Thank you so much for all your helpful replies!

Lily