The method of making "Aged Plum String" is to process and make plums, and then put them into pure and high-quality honey. After the plums and honey are sealed for a period of time, they become plum strings. The plum strings processed and made in Pingwu can last for many years and can be stored for a long time. The longer they are stored, the more mellow their taste will be. They are called "Aged Plum String". The plums used to make "Aged Plum String" cannot be fully ripe. The plums with a large and slightly green color are better. Plums are rich in nutrients and high in vitamins. They are both medicines and beverages. They have the effects of clearing away heat and relieving summer heat, preventing cancer and curing diseases. "Aged Plum String" is one of the specialties of Pingwu County, "Long'an Mountains and Rivers". It is a traditional craft food with a history of more than 500 years. "Aged Plum String" and "Dates" and "Osmanthus Wine" were all "tributes" produced by Longzhou Tusi for the emperor. In those days, in addition to tribute, only a small amount flowed into the folk for the leisure and taste of scholars and officials. Pingwu's production of "Aged Plum String" has a long history, high quality, and unique craftsmanship, and is well-known far and wide. Before liberation, the upper class of Pingwu used "plum string and jujube" as precious gifts. The method of "aged plum string" is to process and make plums, then put them into pure and high-quality honey, and after a period of sealing, the plums and honey become plum string. Honey has the fragrance of plums, and plums are dissolved in the sweetness of honey. Honey and plums are slightly sweet and sour. Plum string can be used as soup or tea, which is sweet and sour and refreshing, and is a good product for summer heat relief. The plum string processed by Pingwu can last for many years and can be stored for a long time. The longer it is stored, the more mellow its taste is, which is called "aged plum string". Pingwu County is located in the northern mountainous area of the Sichuan Basin. It is a mountainous county with a long history. Since the establishment of Gangdi Road in the Western Han Dynasty, it has a history of more than 2,200 years. Due to its important geographical location, Pingwu has always been the place of governance of the ancient Longzhou, Jiangyou County, and Long'an Prefecture. Pingwu County has a vast area of 6,000 square kilometers. It is full of high mountains, dense forests, and ravines. The lowest point in the county is 675 meters above sea level, and the highest point is more than 5,400 meters. It is vividly called "Long'an Mountain River" by the mountain people of Pingwu. The transportation is blocked and the population is sparse. There are 12 ethnic groups living in the county, including Han, Tibetan, Qiang, Hui, etc. It is a multi-ethnic county. The interaction, reference and integration of different ethnic cultures constitute the cultural characteristics of Pingwu County. Pingwu has a history of more than 500 years of planting plum trees. Fruit plums are distributed in areas with an altitude of 6,400-1,600 meters. Pingtong, Xiangyan, Gucheng, Doukou, Gaocun, Mupi, Muzuo, Kuoda and other towns are all concentrated fruit plum production areas. The annual output of fruit plums in the county reaches 10.2 million kilograms. Pingwu people have been making aged plum lines for more than 500 years. The specific evolution and development history of "Pingwu aged plum line production technology" is difficult to verify. Aged plum string is a good product for cooling off the summer heat. Plum is a common crop that is abundant in the Pingwu mountainous area. Aged plum string is rich in nutrition and has a fresh taste. It is a common food that is worth preserving and utilizing. The "Pingwu Aged Plum String Production Technology" is a creation of the people in the Pingwu mountainous area. It has the connotation of folklore and humanities, and has certain value for studying the customs of the people in the Pingwu mountainous area. Many towns in Pingwu were in a state of traffic blockage and almost isolated from the world until a considerable period after the founding of the People's Republic of China. It was difficult for the outside culture to be introduced, so the traditional "Pingwu Aged Plum String Production Technology" could be preserved and passed down. Since the "new era" of reform and opening up, due to the complicated production process of "Aged Plum String", low output and low economic benefits, the Pingwu Sugar Factory that has been producing "Aged Plum String" has gone bankrupt and sold, and the "Pingwu Aged Plum String Production Technology" has lost its survival basis and urgently needs rescue protection. Information source: Mianyang Intangible Cultural Heritage Protection Center (No pictures yet, welcome to provide.) Information source: Mianyang Intangible Cultural Heritage Protection Center (No pictures yet, welcome to provide.)