In ancient China mythology, there are stories of Kuafu chasing the sun and Jingwei filling the sea. In folklore, there is a beautiful story of grinding a pestle into a needle and stealing light from the wall. Among the ancient historical materials, there is "Dayu Harnessing Water".
(1) Work hard.
(2) such as: a porridge and a meal, when thinking hard; It is difficult to keep thinking about material resources. Difficulties and hardships, Yucheng. Be prepared for danger in times of peace, and refrain from extravagance and frugality. Born in sorrow, died in happiness and so on.