City people can savor the distant and vast world that they are not familiar with; country people can recall scenes of familiar and original historical events. This novel thinks a little about life and human nature: it mainly tells about the era in which a conscientious country store owner once lived. He once lived in a primitive, closed, and backward rural era; he once lived in an era when rural teacher resources were extremely scarce; he once lived in the childhood days when children in the mountains had to work hard; he once lived in an era that no one could match - the Zhigao era; he once lived in that distant era!