The request for substantive examination is not directly related to whether it is published or not. The request for substantive examination may be submitted at the same time as the application is filed or after the invention is published, but the patent law stipulates that the time limit for submitting the request for substantive examination is three years from the date of application. Moreover, you can formally submit the actual trial request only after "submitting the actual trial request" and "paying the actual trial fee". These two tasks can be carried out separately or together, but they must be carried out within a three-year period.
Entering the actual trial procedure means that after submitting the actual trial request and publishing the invention patent, neither will enter the actual trial procedure.
Therefore, if the trial fee is paid before the announcement, it will not enter the trial procedure immediately or wait until after the announcement.