Of course, it refers to the three-month announcement period during which objections can be raised, not the announcement period.

Article 30 of the Trademark Law:

Any person may raise an objection to a preliminary approved trademark within three months from the date of announcement. If there is no objection at the expiration of the announcement period, the registration will be approved, a trademark registration certificate will be issued, and the announcement will be made.

The "announcement period" refers to three months.