There is a place in the mountainous area of southern Zhejiang. Although it is not very high, it is not as gentle as the hills in the plain area. What’s more, the mountains are closely linked, and the flat land between the two mountains is very few, and a stream takes most of it. Therefore, since ancient times, there have been names such as “nine mountains and half water and half field”, “eight mountains and one water and one part field” and so on. Although they are not the same, they all mean that there are more mountains, less water and less land. In such a poor place where only green hills are visible, the connection with the outside world is along the direction of the stream, in addition to the bamboo Pai on the stream, people have opened up many mountain roads for thousands of years.