1, "Ancient Capital Style" refers to a historical architectural relic: the whole ancient block, or the coordinated layout of the building and the city wall, or the combination of the city wall and the surrounding mountains and rivers, or even a complete historical ancient city.

Literature source

1. Article 3 of the Regulations stipulates that historical buildings refer to "buildings with traditional styles that were built in Gulangyu before 1949 and have historical significance, artistic characteristics and scientific research value."

Literature source