As early as the Ming and Qing Dynasties, people in Datong area had the custom of giving red eggs to celebrate weddings, birthdays and having children. At that time, it was even more popular in Beijing, and the dosage was also considerable. So some people set up stalls and set up shops to sell dyed red eggs, which are called "eggs". Later, for the sake of prosperous business, vendors painted some patterns such as flowers, birds, fish, insects and faces on eggs. After years of evolution, the egg craft has gradually improved, and finally formed an artistic treasure with high appreciation value.

On the basis of egg technology, Zhang Jiancheng of Datong Material Recycling Company is ingenious in carving various patterns on thin eggshells with a carving knife, which is called "Datong Egg Carving". In order to master the processing technology of egg substance, he went to Beijing Damucang Egg Art Factory for advice many times, and finally learned a set of processing technology of egg white and yolk. Carved with reddish-brown fresh eggs, the pattern is clear, the lines are clear and the three-dimensional sense is strong. Then, the egg white and yolk are extracted with a syringe, washed repeatedly with clear water and liquid medicine, and the self-made chemical emulsion is injected from the original hole, which solidifies in the egg while rotating it, forming a thin protective film. Pinholes are left on the lace, leaving no trace, which makes an ordinary egg become a work of art with great appreciation value.

There are many kinds of egg carvings, such as portraits of people, flowers, birds, fish and insects, facial makeup of Beijing opera, poetry and calligraphy, etc., which are well matched with each other and strive for beauty vividly. For example, the egg carvings of "portraits of people" are lively from ancient emperors to modern celebrities; The egg carving in "Running Horse" is bright and vivid, just like a picture of Xu Beihong running horse, which makes you intoxicated; In the egg sculpture of Flowers, Birds, Fish and Insects, the wings of slugs are flying, flowers and plants are dripping in the wind, flowers and birds are singing, and goldfish are playing in the water, which will definitely make you relaxed and happy; "Poetry, calligraphy and painting" egg carving, the front is engraved with the portrait of the poet, and the back is engraved with humorous verses, in which calligraphy is integrated. It can be said that it is a collection of characters, poems and calligraphy in one furnace, such as storing treasures, which makes people never tire of reading and have endless aftertaste.

Zhang Jiancheng studied Chinese painting and seal cutting in his early years. With profound knowledge, he skillfully designed oval eggshells, and the carved images are both similar and spiritual, with strong three-dimensional sense. His egg carving works use knives instead of pens, which not only inherits the painting method of China's traditional Chinese painting, but also integrates the realistic style of western oil painting, and truly achieves "making the past serve the present and making foreign things serve China".

Datong egg carving, each set with mahogany base and brocade forged packaging color box, is more elegant and outstanding. Although it is a newly unearthed seedling, after hard cultivation, it will soon grow sturdily, blossom and bear fruit, making it appear in the flowers of the sculpture art park, emitting national beauty and giving people beautiful enjoyment. Nowadays, the art of egg carving in Datong has attracted the attention of experts, scholars and people from all walks of life. They unanimously praised it as "a unique skill and a rare art" (Datong)