thanks @resurectionfor the verification. that means to say I can't escape from the wait of 6 months and I have to do visa run to Macau or Hong Kong for a couple of times before I can apply for any visa for china.
@Morrison I had read about it before but that doesn't entitle me to any privilege in china. I can apply for HKPID but I can't hold a HKSAR passport unless I renounce my country citizenship as my country doesn't allow dual citizenship. @kma88 I have read about this as well and the 5 year visa and residence permit is as good as a Chinese ID. requirement is to prove that as long as you are a ethnic Chinese and have documents to show that your parents, grandparents, great grandparents or ancestors are Chinese and born Chinese , you will be eligible to qualify for it and all documents (not issued in china) need to be legalised at your own country's china embassy in order to be translated in china at any 公证处 before the official able to accept the documents from you. However 5 years visa is the maximum duration and not all will be granted for 5 years. Only applicant who are high profile or government official related may be granted with the 5 years visa, the rest may try their luck. I heard someone gotten 3 years instead.