Will it affect the application to publish academic reports at international academic conferences before applying for patents?

Yes, six months.

According to Article 24 of China's Patent Law, an invention-creation applying for a patent shall not lose its novelty in any of the following circumstances within six months before the filing date:

(1) It was exhibited for the first time at an international exhibition sponsored or recognized by the China Municipal Government;

(2) It was first published at a specific academic conference or technical conference;

(3) Others disclose the contents of the application without the consent of the applicant.