Ci Yuan interprets "Jia" as:
"The method of printing and dyeing in the Tang Dynasty is to carve the same pattern with two pieces of wood, fold the silk in half, insert it into this second board, and then dye it in the carved space to become a symmetrical pattern. The brocade, silk and other silk products printed by it are called clips. "
There is a saying about Javalle that was created by concubines of Emperor Xuanzong of the Tang Dynasty and spread all over the world.
In the Song Dynasty, Wang Shu's Tang Yulin quoted Shuo Wen Jie Zi Lu as follows:
"Xuanzong Liu Jieyu talented, very heavy. Jieyu's sister is suitable for the Zhao family and smart. Because she made the carving board a symbol of miscellaneous flowers, she is a folder. Because of Jieyu's birthday, I presented a horse to the king and queen. When I saw it, I rewarded it because it was made in Jieyu Palace. It was very secret at that time, and then it gradually spread, spread all over the world, and was served by the meanest people. "
Bai Juyi, a poet, also wrote a poem "Chengdu is new, Han Liang is off rouge" in "Giving a Half-Flower Play to Dong Chi Xiao Lou, the Eight-Year Cold Food Day of Huangfu Langzhong". The name of Jiayu is not only included in poems, but also recorded in historical documents, which further shows that Jiayu was in its heyday in the Tang Dynasty.
The colorful flower tree and mandarin duck pattern furniture in Masakura, Japan, showed the elegance of colorful furniture at that time.
Jia Valerian method
Today, we can only see valerian dyed with indigo. Indigo, a traditional plant dye, is a common people's clothing and home decoration material, which has a history of nearly a thousand years in China. This seemingly simple blue pattern contains a very complicated production process. The three main processes of making blue Valeriana are making Valeriana disk, preparing dyes and dyeing Valeriana.
Javalle's pattern making is the most exquisite link. The pattern board is carved into two symmetrical patterns with carefully selected wood blocks, which has the dual functions of anti-dyeing and coloring. The production of pattern plate pays attention to "open ditch and dark ditch", that is, the notch on the plate must be smooth, so that the dye solution can pass through and facilitate dyeing. When printing and dyeing, the fabric is clamped between two engraving plates and fastened, and then the printed plate of the clamped fabric is immersed in the dyeing vat, and the dyeing liquid flows through the rigid negative lines, so that the fabric is naturally colored, and the clamped positive lines are left blank, thus forming an eye-catching blue-and-white visual effect.