The patent has been authorized, why is there a public submission number of the same application?

When applying for a patent, the method of publication shall be adopted. This patent has been authorized to have the public contribution number of the same application. In this way, within a period of time after the filing date, the patent application will be made public in the patent office, thus obtaining the publication number. Different patent contribution numbers also follow certain coding rules. Such as annual number, serial number and follow-up application number. If the patent application adopts serial number, even if the patent has been authorized, the last digit of WeChat official account will still be the same as that of WeChat official account before the filing date.