The seven wonders of Guangyuan include: Cangxi red-hearted kiwifruit, Micangshan brand selenium-rich and zinc-rich green tea, Qingchuan black fungus, Chaotian walnut, Cangxi Sydney, Jianmenguan tofu and Guangyuan olive Cangxi red-hearted kiwifruit. Guangyuan city is the origin of natural resources, the breeding ground of excellent varieties and the most suitable area for cultivation of Cangxi red-hearted kiwifruit. The selected Chuanmi series and COVID-19 No.2 varieties have been included in the income and achievements of UNESCO, and the selected red-heart kiwifruit series varieties Hongyang, Honghua and Hongmei are the only new varieties of colored kiwifruit at home and abroad, which are known as the "king of fruits" and the crown of VC, and their variety value occupies a leading position in the world, and they have obtained independent intellectual property rights of the state. Kiwifruit production base, fresh fruit and a series of processed products were awarded the national green food raw material base and food certification. Cangxi County is named as the hometown of red-hearted kiwifruit in China and the national kiwifruit standardization demonstration area. Cangxi kiwifruit is protected by geographical indications of national origin. Research projects such as the development, utilization and protection of kiwifruit resources have won provincial and municipal scientific and technological progress awards for many times. Micangshan brand organic selenium-rich and zinc-rich green tea Guangyuan City is an important organic selenium-rich and zinc-rich green tea producing area in Sichuan, with a long history of tea planting and profound tea culture. Levinbo tea and seven buddha tea were identified as tribute tea in the Western Han Dynasty and the Tang Dynasty respectively. Levin's ancient tea tree has survived to this day, and now Zhao Hua is called "Tomon" in ancient times, which is the first county named after the word tea in the history of China. Guangyuan is located in the transitional zone between north and south, with obvious three-dimensional climate, abundant sunshine, foggy all year round, high soil organic matter content and less industrial "three wastes" pollution. It is the best area for developing A-grade green organic tea cultivation. Guangyuan tea has rich nutrition, green color, green soup color, mellow taste, beautiful shape and high quality, foam resistance, less pesticide residue pollution and extremely low heavy metal content. Its nutritional components are: water extract ≧7.45%, amino acid content ≧3.6%, zinc content ≧ 0.55mg/kg and selenium content ≧0.3mg/kg, especially in tea, which is obviously higher than other producing areas inside and outside the province. Tea rich in zinc and selenium has obvious anti-aging and anti-cancer effects. Qingchuan black fungus Qingchuan black fungus is also called black fungus, cloud ear, wood moth, black vegetable and elm ear. Because of its unique growth environment, rich nutritional value and huge market prospect, it is as famous as tremella and is the best of its kind. It has the effects of nourishing and strengthening the body, clearing away lung-heat, invigorating qi, clearing stomach and intestines, enriching blood and promoting blood circulation, calming and relieving pain, and is an important health food. Guangyuan is an important producing area of auricularia auricula in China, with a history of 1000 years. Qingchuan Auricularia auricula is famous for its unique quality, protected by national geographical indication products, and designated as "quality standard of Auricularia auricula" by the state. In 2008, Qingchuan Auricularia auricula was awarded as a well-known trademark in China. In 2009, there were 2 1 10,000 pieces of auricularia auricula planted in the city, and the output was 3 1 10,000 tons. Using the leftovers of planting auricularia auricula in the city, rare products such as dictyophora indusiata and bagged mushrooms were developed, with an output of 5000 tons. By 20 12, the number of black fungus in Qingchuan reached 34 million and the output reached 5000 tons. Make Guangyuan an important production and export base of auricularia auricula in China, and make Qingchuan auricularia auricula a well-known trademark in China. Chaotian Walnut Guangyuan is an important producing area and the best growing area of walnuts in Sichuan Province. Guangyuan Walnut is famous all over the country for its big head, thin skin, full seeds, moderate color, rich and delicious flavor, easy kernel picking and high kernel yield. After years of unremitting efforts, the brand value of Chaotian Walnut has become increasingly apparent. In 2005, Chaotian Walnut won the gold medal in the second Western International Expo. In 2006, Chaotian District was named "National Walnut Construction Demonstration Base County". In July 2007, Chaotian Walnut was approved by the General Administration of Quality Supervision, Inspection and Quarantine to implement the "Protection of Geographical Indications Products". In 2008, "plank road" brand walnuts entered Beijing and Shanghai markets, and were exported to the United States, Japan, South Korea and other countries, which were well received by consumers at home and abroad. The city's walnut planting area is 500,000 mu, with an annual output of 28,000 tons, ranking first in the country. By 20 12, 700,000 mu of walnut base will be built in the city, with an annual output of 55,000 tons of walnuts. Cangxi Sydney Guangyuan City is an important production base and origin of Cangxi Sydney in China, with a cultivation history of over 1000 years. Cangxi Sydney is named "Shi Jia Pear" because its meat is as white as snow and melts in the mouth. Cangxi Sydney is famous for its big fruit, small heart, thin skin, tender dregs, sweet juice, high yield and wide adaptability, and is known as the "king of pears". Cangxi Sydney was regarded as a tribute in the Ming and Qing Dynasties and was highly respected. Mao Zedong, Zhou Enlai and Deng Xiaoping all spoke highly of Cangxi Sydney after tasting it. Cangxi Sydney has been cultivated and propagated for generations, with stable characters and excellent quality. It has been exhibited in the National Agricultural Exhibition Hall for many times, and has won many awards, such as national excellent fruits, national high-quality agricultural products, and China famous specialty products, and has been protected by national geographical indication products. Cangxi County is named as the hometown of Sydney in China and the national green food Cangxi Sydney standardization base county. The first AAA China Pear Culture Expo Park in China has been built. In 2009, the area of Cangxi Sydney in the city was 400,000 mu, and the output was10.5 million tons. It is estimated that by 20 12, the area of Cangxi Sydney will reach 450,000 mu, with an output of 200,000 tons and an annual processing capacity of 654.38+10,000 tons. Jianmen Tofu Jianmen Tofu is made from soybeans produced in gravel sand in Jianmen Mountain area and "Quanjian" water from Jianmen 71 Peak, through soaking beans, grinding, residue filtering, boiling, pulping and dehydration. The unique manual skills such as stone grinding and rotary grinding used in Jianmen tofu production point out that tofu is white in color, tender and delicious, not astringent in taste, fragrant and strong in toughness. According to historical records, Jianmen tofu originated in the Three Kingdoms period and has a history of thousands of years. According to legend, when Jiang Wei, the general of Shu and Han Dynasties, retreated to the sword gate, the soldiers were exhausted and the barrier in northern Shu was dangerous. At that time, the local people ground soybean milk, rewarded the soldiers with tofu and fed the horses with bean dregs. Three days later, Jiang Wei led only 5,000 soldiers, defeated Zhong Hui and solved the sword gate crisis. It is also said that when Tang Xuanzong entered Shu, he crossed the sword gate, tired, restless and tasteless. When he tasted Jianmen tofu, he felt his appetite was wide open and he was amazed. He named the specialty soybean for making tofu "Huang Dou". Since then, the reputation of Jianmen Tofu has spread far and wide, and it has been passed down from generation to generation, with various reputations such as "Dragon Brain" and "Imperial Tofu". Guangyuan Olive Guangyuan is an important producing area and the best planting area for olive production in China. Olive is recognized as the queen of vegetable oil and liquid gold in the world. Olive is not only rich in nutritional value, but also can prevent cardiovascular diseases, diabetes, cataracts, obesity, Alzheimer's disease, hepatitis, anti-aging and cancer prevention. At the same time, it is a safe and reliable beauty product, which is known as "beauty oil" in the west. At present, the city has built an olive planting base10.5 million mu, planted more than 0/0 varieties of Fuao, Laixing, Peiduoling and Piccioli, and built a mother orchard of excellent olive varieties of 300 mu. In recent two years, four new varieties have been introduced from China Academy of Forestry and Israel. At present, 0/5 olive varieties and 2 100 olive plants have been planted, and a 50-mu scion garden with an annual output of more than 3 million olive plants has been established. The output will reach 500 tons in 2009, and it is expected to reach 5000 tons by 20 12. Build Guangyuan into the largest olive oil production, processing and export base in China.