What is the specific content of the patent? You mean the rights claim?
The full text of the claims and description can be found in the "Patent Search" in the middle right corner of the State Intellectual Property Office's website, free of charge! Sometimes when the network is busy, an error message will appear, so you have to wait to check it at night or on weekends.
Whether there are specific parameters depends on the writing, and may not all be available.
(In addition, go to the intellectual property office webpages of various provinces and there are also patent databases you can check. It is also free!)