This book presents a panoramic view of the entrepreneurial history of the Saihanba hero group who won the United Nations Guardian of the Earth award for more than half a century. By selecting the main figures among the three generations of entrepreneurs, and naturally connecting related figures and important events, the historical process of the Saihanba Forest Farm over the past 55 years is displayed, and the builders of the Saihanba Forest Farm are vividly described in the Yellow Sand Covers the Sun, Flying Birds Live He worked hard and devoted himself on the desert sandy land without trees, and created the miracle of transforming wilderness into forest and sea.