The Best 10 Children's Books in the 23rd Shenzhen Reading Month.  Recommended book from Children's Branch of the National Library of China. A history of crops is also a history of the evolution of human civilization. We often say that "Food is the most important thing for people". The crops we eat everyday come from all regions of the world. Where did these crops originally come from and where did they spread to? The book took three years to write, selecting 56 kinds of crops we are familiar with, covering the staple food, fruits and vegetables we often eat. Crops are the gift of nature. We hope our children will respect food and appreciate our life.