We should be familiar with walnuts, which are often found in dishes, food and health products, and have high edible and medicinal value. So who actually brought walnuts back from such a distant place in the West and took root? Walnuts and Zhang Qian’s story Walnuts are also known as “walnuts” or “qiang peaches”, and are also known as long-life fruit. According to the “Compendium of Materia Medica” said: “This fruit originally came out of the Qiang Hu, the Han Dynasty Zhang Qian to the West began to get the seeds also, planted in the Qin, and gradually to the East, so the name of the”. “This fruit has a green skin outside the flesh wrapped, its shape like a peach, walnut is its core. Qiang Yin whistle nucleus such as Hu, the name or this, or as walnut”. Qiang Hu in ancient times refers to the present South Asia, Eastern Europe and domestic Xinjiang, Gansu and Ningxia and other places. In 128 B.C., when Zhang Qian introduced it to the Central Plains, it was called “walnut”. Historical records show that in 319 A.D., the Jin general Shi Le occupied the Central Plains and established Hou Zhao, changing the name of pecan to walnut, and the name continues to this day. Archaeological researchers in China have found that there is walnut pollen deposited at the tribal site of Xi’an Hanpo Village, which is more than 6,000 years old; carbonized walnuts have been unearthed in Zhongshan Village, Wu’an County, Hebei Province, which is more than 7,300 years old, and it was the Neolithic Age at that time; the walnut fossil found in Shanwang Village, Linqu County, Shandong Province, is 25 million years old, which is the middle Eocene of the Tertiary Period. Thus, it is clear that China is one of the original origins of walnuts in the world. Walnuts were also once objects that people played with, so they are even more unique. Throughout the ages, from the emperors to the kings, from the noblemen to the officials to the common people, all of them were proud to have a pair of walnuts that were as clear and shiny as a mirror. Especially in the Ming and Qing dynasties, playing with walnuts reached its heyday. The Emperor Ganlong of the Qing Dynasty was not only a great connoisseur of walnuts, but was also said to have written a poem in praise of walnuts: “The sun and the moon are spinning on the palm of your hand, time wants to flow backwards, your body is full of qi and blood, what year is the white head. At the end of the Qing Dynasty, there was a folk rhyme in Beijing: “Walnuts do not leave your hand, you can live eighty-nine, more than Master Ganlong, the King of Hell called not away.” This shows that the health care role of walnuts has long had its irreplaceable position in folklore. The source of walnuts and the role of the source: the dried mature seeds of the pecan plant pecan. Place of origin: produced throughout the country. Taste: sweet, warm. It belongs to the kidney, lung and large intestine meridians. Effects: Tonifies the kidney, warms the lung, and moistens the intestines. Note: “But walnut is hot and can enter the kidney and lung, but it is suitable for those who are cold and deficient. Therefore, it is not advisable to take too many walnuts if the phlegm and fire are hot. Walnuts for the role of walnuts, the “Compendium of Materia Medica” said: “eat it makes people fat and healthy, moisten the muscle, black hair; eat more than the urine, go to the five hemorrhoids.” Also said: “nourish the blood, moisten dryness and phlegm, benefit the vital gate, benefit the three jiao, warm the lungs and moisten the intestines, treating cold and asthmatic cough, waist and foot heavy pain, heart and abdominal hernia pain, blood dysentery intestinal wind, dispersing swelling and poison, hair pox, copper poison. Therefore, the role of walnuts are: 1, kidney Yang deficiency, lumbar pain and foot weakness, frequent urination. 2, lung and kidney deficiency, deficiency of cold and asthmatic cough, lung deficiency long cough, asthma. 3, intestinal dry constipation. It can be seen that regular consumption of walnuts, both healthy body, but also anti-aging. Some people tend to eat tonic, in fact, eat a few walnuts every morning and evening, is really beneficial, often better than eating tonic.