Can a Palestinian Professor currently in Cairo renew China Visa here in Cairo?

Hi Sami! I don't think you can renew the previous one since it has been long a long time from the date it expired. I suggest you to apply for an F type, which may require you to submit your valid passport and a photocopy of its data page, a completed application form affixed with your recently taken color photo, proof of your legal stay or residence status in Egypt, and an invitation letter issued by a relevant entity or individual in China.