Hi...How to take tourist visa for one week?

You should first prepare the following documents including your passport and copy of its data page, the completed application form attached with a passport-sized color photo, the residence permit there or valid entry permit to Dubai, as well as round trip air tickets and accommodation reservation. Maybe an invitation letter from Chinese tourist bureau, your travel itinerary, and personal bank statement within at least recent three months are required too.
Afterward, hand in your application to the embassy of PRC in Dubai to apply for it.