With the advent of the five-year-plans, millions of women also began to toil in factories and in heavy construction, building dams, roads and steel mills in summer heat and winter frost.

In order that the crops in open field could survive safely the winter frost prevention operation is of Paramount importance.

Heart in Fanghua, even if this meant living in the north wind whistled, trees are dying of winter frost cold winter, the heart is also filled with lively, vibrant, yielding in March;