Shimenyan Scenic Area is located at the east foot of Wuzhai Village, Xingguang Village, Chuanchang Town, Nanjing County, more than ten kilometers away from Fiona Fang, with three caves and eighteen views. 1986, the stone hairpin, pointed stone tools and other cultural relics unearthed in water curtain cave in this scenic spot were identified as the cave sites of ancestors in Neolithic age. During the Tang Dynasty, Chen Yuanguang entered the rebellion in Pingping, Fujian Province, and Liu Po, the local leader of She nationality, lived in this dangerous cave, haunting the mountain valleys and confronting the government forces. So far, this story has been widely circulated among local people. Later, the monk Zen Garden of the Tang Dynasty came here from Jiangxi and loved its secluded forests and caves, so it built a house in the scenic spot Shiying Mountain, raised funds to build holes and repair paths, cut ponds and plant lotus, plant plum and bamboo, build pavilions and build temples, and created various scenic spots in Shimenyan, which was later called "the founder of the mountain".

The strange landscape of Shimenyan is a perfect match. There are more than 400 meters long spiral caves and Huaiyin caves which are warm in winter and cool in summer. In the 25th year of Emperor Kangxi of the Qing Dynasty (1886), Meng Zhenyu, the magistrate of Nanjing, left stone carvings such as Luyuan and Leopard Hidden. Wu Duo, the father of Zhuang Hengyang, Xu Haidao's assistant envoy in Qing Dynasty, once wrote "Shimen Song" and "Shimen Rock Fu", which vividly described the Shimen Rock landscape. Nanjing county is the main producing area of citrus in Zhangzhou. Nanjing citrus is famous for its color, fragrance and taste, and enjoys a high reputation at home and abroad. 1994 won the gold medal in the first high-quality citrus fruit selection exhibition in Fujian Province; 1995 won the silver award for similar products in China Agricultural Fair; 1998 was awarded the "Hometown of Citrus in China" by China Specialty Economic Committee.

Nanjing citrus has huge fruit shape, crystal clear fruit quality, good slag melting, rich juice, moderate sweet and sour taste, easy peeling, refreshing food and lasting taste. In the Ming Dynasty, Ling recorded in Rongcheng Essay: "There are all kinds of oranges in Zhang Nan, but they are all very big, and oranges are the most important." Its soluble solid content is more than 12%, acid content is less than 0.58%, and the vitamin C content of 100 grams of juice is not less than 38.5 mg, which is 15-20 times of that of apples and pears, which is the highest among fruits. According to the dictionary of traditional Chinese medicine, citrus has the effects of promoting fluid production, sobering up and diuresis. Anoectochilus roxburghii likes cool and humid, and its growth temperature is 18℃ ~ 25℃, which requires normal sunshine 1/3 or so. Nanjing County is located in the south of Fujian Province, the hometown of Fujian Tulou, a world cultural heritage. It has a typical subtropical monsoon climate and excellent natural ecology. The annual average temperature is 2 1℃, and the annual rainfall reaches. Nanjing wild anoectochilus roxburghii is mainly distributed in the deep forests of Nankeng, Chuanchang and Hexi Town, which is the most abundant area in Fujian Province. Due to strict requirements on the growth environment, low natural reproduction rate and slow growth, insects, birds and other animals like to eat, and artificial over-picking, the wild anoectochilus roxburghii resources are on the verge of extinction. In order to protect wild anoectochilus roxburghii, Fujian provincial government listed anoectochilus roxburghii as an endangered medicinal plant in 1990. Nanjing county has been a royal tribute treasure exclusive to the royal family since the historical record of cultivating anoectochilus roxburghii in Qianlong period of Qing Dynasty. Green food, organic food, China origin protection products, China origin of anoectochilus roxburghii and China hometown of anoectochilus roxburghii are all unique to China.

As the largest anoectochilus roxburghii production area in China, Nanjing County was awarded the title of "Hometown of Anoectochilus roxburghii in China" by the China Special Committee in 2012. It gave full play to its geographical advantages and vigorously promoted the cultivation of Anoectochilus roxburghii. Its products sold well at home and abroad, with an annual output value exceeding 100 million yuan year after year. In 20 13 years, there were 46 standardized production enterprises of anoectochilus roxburghii in Nanjing county, with an artificial tissue culture base of 1000 mu, more than 3,000 mu of planting greenhouses, and more than 5,000 mu of interplanting under forests. The products developed include seedlings, fresh whole grass, dried whole grass, anoectochilus roxburghii health tea and indoor ornamental anoectochilus roxburghii bonsai, with an annual output.