sir, I'm having indian passport..want to go hongkong 4 days and go to 3 days in guangzhou

You don't need the entry permit for Hong Kong and need a single-entry L type for Guangzhou. Prepare the required documents in advance, such as your valid passport, a photocopy of the passport's photo page, a completed applcation form affixed with a recent taken color photo, round-trip tickets and hotel reservations, a personal written statement, and other materials required by the officers. Then go to the CVASC branch in India and submit the application.