It is pointed out that there are defects, or that it needs to be modified, which can be overcome by modification. It is pointed out that some things that need to be deleted may not meet the requirements after modification, so they are generally deleted; However, some of them can be modified without deletion to overcome the defects.
If nine articles in 1 1 are deleted, the article that needs to be modified will also be deleted, leaving only one article, and the patent right can also be obtained. Besides, apart from the one that has not been mentioned, there is another one that can be retained by amendment, so even if nine articles are deleted, two articles can still be retained and patents can be obtained.
But in my opinion, you may not know much about how to delete, modify and keep. If it is your own reply, I suggest you consult the examiner. If the contact information of the examiner is left on the notice (the key point is how to modify that one after deleting nine articles, and how to keep the other one, rather than simply deleting nine articles without moving the others).