In recent years, Zaozhuang in East China's Shandong province has been promoting greenhouse planting technology to increase incomes for local farmers.

The city has cultivated a "company + cooperative + planting base + farmers" model to provide pollution-free, green and organic fruits and vegetables to large cities such as Beijing, Shanghai and Shenzhen.

A farmer picks eggplants at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC]

A farmer picks tomatoes at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC] 

A farmer picks strawberries at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC]

Farmers manage cucumber seedlings at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC] 

Villagers sell strawberries during a livestream at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC]

Farmers sort out freshly-picked tomatoes at a greenhouse in Zaozhuang, Shandong province on Dec 13. [Photo/IC]