may i know the distance between Guangzhou domestic airport to the international airport ?

Well, both domestic hall and international hall are located in the same building. So the distance is not long. It won't take so much time. Don't worry. About the transfer, you'd better prepare 2 hours to complete transit procedures.

Upon landing, the procedures are Baggage Claim, Transfer Procedure, Inspection & Quarantine, Customs Inspection, Security Check, Frontier Inspection. You can accomplish them step by step according to the English signs.