More than half a century ago, Saihanba, located in the north of Hebei Province, was still a Desert sandy land with "yellow sand covers the sky and the sun, and birds have no trees". Now, it has built the world's largest one million mu artificial forest sea. Behind the great changes are the dedication and persistence of generations of Saihanba people. In recent years, Guangdong has implemented the "Saihanba spirit" with practical actions and solidly promoted the construction of ecological civilization. The author learned from the provincial forestry bureau that Guangdong's "green territory" has been expanding, and the forest coverage rate has increased to 58.7%. The forest area and forest stock have continued to grow, and the number of forest parks, wetland parks, nature reserves and other natural reserves has steadily increased, becoming one of the most "green" provinces in China. Relay innovation?? In August, the Saihan dam of rocky desert desert desert mountain changed into "karst forest" has boundless forest sea, magnificent grassland, vast wetland, clear lake... All eyes are filled with charming scenery. It is known as "the source of water, the hometown of clouds, the world of flowers, the sea of forests, and the paradise of birds and animals". However, in the 1960s, Saihanba was still a severely degraded barren mountain and barren ridge, which could not stop the southward invasion of wind sand in Hunshandak Sandy Land. In 1962, in order to improve the local natural environment and serve as a source of sand and Culvert Water for Beijing and Tianjin, the former Ministry of forestry decided to establish Saihanba mechanical forest farm. Under the situation of extreme lack of material and technology, through the hard work of three generations of Forest Farm builders, the total operating area of Saihanba forest farm is 1.4 million mu, with a forest land area of 1.151 million mu, a forest stock volume of 10.368 million cubic meters, and a forest coverage rate of 82%. In the words of Liu Jun and Wang Juan, the watchmen of the "second generation of Lin", I feel very happy to see the forest everywhere. This forest is changing and growing up every year Liu Xinyang, a post-90s technician of "Lin San generation", also said: "in recent years, there have been more wild animals in the forest. Roe deer, pheasants, grey cranes and swans can often be seen, which shows that the forest quality of Saihanba is getting better and better." Over the past 60 years, through the hard work of generations of Saihanba people, the Saihanba spirit of keeping the mission firmly in mind, hard work and green development has been forged, which has important demonstration significance for the construction of national ecological civilization. From Hebei to Guangdong, from Saihanba forest farm to the coast of the South China Sea, the prevention and control of land desertification are all outstanding problems faced by forestry work. In northern Guangdong, the rocky desertification phenomenon known as "land cancer" is prominent, especially in Shaoguan Lechang, Ruyuan and other places. "At the beginning of this century, the soil cover in the rocky desertification areas of Guangdong was better than nothing, and it was difficult for plants to grow." This is the memory of a cadre of Lechang Forestry Bureau. Hold fast to the green hills. The possibility is almost zero, which also means a chance. For more than ten years, forestry cadres in Lechang have climbed stone mountains and tried different tree species on the thin soil layer. Between withering and flourishing, layers of fine soil are quietly left, and the native cypress trees are growing better. Compared with 2005, the rocky desert in Lechang City