Red-skinned walnut is formed by grafting two kinds of walnuts. They are native to California, USA, and there are also small areas of wild cultivation in Xinjiang. The shell of red-skinned walnut is harder than ordinary walnut. The skin of this walnut is red and crimson. The test results show that this red color is formed because it contains anthocyanins.

In Europe, this variety is called Red Danube Walnut. Since 1933, it has been formally cultivated by the business community. The earliest plantation in California was named after Robert Livermore (1799- 1858) and translated into Chinese: Livermore red walnut.

Now its commercial varieties are planted all over the world, and they are very sensitive to waterlogging when planting. Moreover, through grafting propagation, seed propagation will be mutated, such as nut whitening. Cross section of fresh and tender fruit.

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Walnut is rich in nutritional value, and has the reputation of "Long live the son", "longevity fruit" and "treasure of health preservation". 86% of the fat in walnuts is unsaturated fatty acid. Walnut is rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B 1, and also contains fiber, phosphorus, nicotinic acid, iron, vitamin B2 and pantothenic acid. Every 50g walnut contains 3.6% water, 7.2g protein, 3 1g fat and 9.2g carbohydrate.

Walnut is not only a plaything, but also an artistic treasure favored by players through carving by folk artists. Artists carve images and patterns of various animals and characters on small walnuts to express people's expectations and yearning for the future.

In ancient China, people called mahogany "fairy wood", which was the most widely used material to exorcise evil spirits and create ghosts. Peach trees have such magical power, which is rooted in the mysterious concept that peach trees are afraid of ghosts.

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