You can apply for substantive examination from the date of publication. You have to apply for it yourself and pay the substantive examination fee. If you do not submit a request for substantive examination, the Patent Office will not take the initiative to examine it ex officio. Moreover, if you have not submitted a request for substantive examination within three years from the date you applied for a patent, it will be deemed that you have withdrawn your patent application, that is, you have given up. Why not quickly check whether the Patent Office has issued an announcement announcing that you have withdrawn it? .