Can I actively modify the patent application documents?

An applicant for a patent may voluntarily modify the patent application documents, but shall abide by the following provisions: Scope of Modification Article 33 of the Patent Law of People's Republic of China (PRC): An applicant may modify his patent application documents, but the modification of the patent application documents for inventions and utility models shall not exceed the scope recorded in the original specification and claims, and the modification of the patent application documents for designs shall not exceed the scope shown in the original pictures or photographs. 2. Time limit for amendment Article 51 of the Detailed Rules for the Implementation of the Patent Law: An applicant for a patent for invention may take the initiative to amend the application for a patent for invention within three months from the date of receiving the notice that the application for a patent for invention has entered the substantive examination stage issued by the patent administration department of the State Council. An applicant for a patent for utility model or design may, within 2 months from the date of application, put forward amendments to the application for a patent for utility model or design. Where the applicant modifies the patent application documents after receiving the notice of examination opinions issued by the patent administrative department of the State Council, it shall modify the defects pointed out in the notice. The patent administration department in the State Council can correct the obvious errors of words and symbols in the patent application documents by itself. Where the administrative department for patent in the State Council modifies it by itself, it shall notify the applicant.