Prolong or new tourist visa?

Hello I'm in zhuhai right one and I have a tourist L wich will expire the 30th of December , I have a ticket out the 29th out from china to Dubai . I'm not resident in Dubai , I will just travel there because I want to return to china in February , how do I make this possible ? I just have a tourist L with be entry so I can't go to Hong Kong and come back I zhuhai .