Three hundred miles cuiyun gallery r is divided into three sections: the south section, the west section and the north section.

The south section is ancient jianzhou (now jiange) to baixi county (now langzhong city) the main road. From the jiangshi township of the bridge side of the river, by longyuan town, gulou township to the bailong town of small hills, journey more than 80 miles. There are more than four thousand cypress trees, is the three sections of the most cypress the most dense section.

The west section is 120 kilometers from Jianzhou (Jiange) to Zitong, starting from Jianzhou, passing Liangshanpu, Liuchiyi, Wulianyi, Yanwu and Shangtingpu to Zitong. It is the main channel from Jianzhou to Chengdu. Wu Lianyi on the post road was the birthplace of Wei Zheng, a famous minister in the Tang Dynasty, It used to be called "the Township of planting pines". Jueyuan temple, a famous national key cultural relics protection unit, is located here. The large-scale murals of "Buddha biography" on the four walls of the Mahavira hall in the temple were painted in the Ming Dynasty. It belongs to wudaozi School of painting and is known as the "national treasure".

The "lanma wall" is the most completely protected section in the western section. There are nearly 240 ancient cypress trees along the 5-mile post road. The road surface of the post road is flat and the ditch is smooth. There are very scientific building methods: such as in order to avoid the collapse of the road, the structure of the use of lime, glutinous rice, tung oil as binder and in the middle of the ladder stone 10 cm thick, more than one meter deep "door stone". In the precipitous section of the road, a "horse blocking wall" is set up beside the road to prevent horses from falling off the cliff and the "horse drinking trough" for drinking water.