In the actual examination, the claim is the same as part of the existing patent. How to deal with it?

I think as long as the patent you apply for later is really better than the previous patent and there are substantial improvements and enhancements, it will not be invalid. But you may need to make a change. Whether the patent is granted or not depends on whether you improve it. Whose patent is perfected on the basis of others' technology, without the previous efforts, there will be no progress for the latecomers. But why do I feel that what you are saying is that your patent is basically the same as other people's content? If the technology is not greatly improved, it is easy for technicians in this industry to design your patented products by looking at the patents of the former, then your patents are enough!