As long as it conforms to the principle of sustainable development, it is pollution-free, safe, high-quality and nutritious, and it is all green food.

For example: pollution-free loofah, cucumber, bitter gourd, green pepper, string beans, kiwi fruit, green tea, plums, spinach, olives, rice, oranges, lemons, mangosteen, durian, pitaya, snake fruit, lily, celery, milk cabbage, broccoli, crystal vegetables, French coriander, Lipu taro, barley, sorghum rice and so on.