Yes- within 12 months from the date of first filing of the priority application.

For national phase of PCT application-within 30 months from the earliest priority date in respect to both the chapters

Worldwide- 

Possible 

required 

1. A Power of Attorney, simply signed. 
2. One copy of the specification and claims.
3. One set of the drawings relating to the invention, if any.
4. An abstract of the invention 
5. A deed of assignment signed by the inventor, if the applicant is not the inventor.
6. A certified copy of the application giving the filing date, number and country if the application is to be filed with a priority claim.

Note Please note that the priority document has to be submitted within 2 months from the earliest priority date and the deed of assignment must be filed within 6 months from the Indian application filing date.

For PCT applications entering the national phase in the China, a copy of the PCT international publication search and examination reports must be submitted with the application. Any amendments made in the International Phase needing to be effected in the Chinese national phase application.

The term for invention patents in China is 20 years from the filing date. The term for utility model patents is 10 years from the filing date. 

The annual fee for the year in which the patent is granted must be paid at registration. Subsequent annual fees are payable yearly in advance. there is a six-month grace period. If you do not pay them (plus surcharge) within this period, the patent lapses

A Chinese patent can't be automatically extended to Hong Kong or Macau. The applicant needs to file a separate application based on the corresponding Chinese patent/application in Hong Kong and Macau respectively and go through the corresponding procedures.