How to quickly get Indian Passport Renewed in Zhongshan, China?

I'm presently based in Zhongshan holding Indian Passport and having Residency Permit and Work Permit for China. My Passport pages are exhausted and I can't undertake any further Travels outside China. Can someone please guide as to how and where and in how much time can I get Additional Passport Booklet issued to me while at Zhongshan China.