What do you mean by three areas and three highlands?

The three zones and three highlands refer to the agricultural science and technology innovation promotion demonstration zone in arid and semi-arid areas, the pioneering demonstration zone for rural revitalization in the new era, the pioneering demonstration zone for modern agricultural development with characteristics, and the modern agricultural innovation highland, talent highland and industrial highland with international influence. This is the goal that the demonstration zone is required to be completed in 2025 in the Official Reply of the State Council on Several Policies to Further Support the Development of Yangling District (Guo Han [2018]133).