Patent affairs information can be inquired through the column "China Patent Affairs Information Inquiry" of China National Intellectual Property Administration website (website link: /xxcx/).
As shown above, open the homepage of China National Intellectual Property Administration website and click the "Patent Search Query" button in the middle to get the page as shown below:
Click the "China Patent Affairs Information Inquiry" button in the above figure to enter the following figure:
Then click "Announcement Information Query" in the above figure to enter the following page:
Enter the application number you want to query in the above page, and click the confirm button to pop up the information you need.