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Brief Introduction to Bricks
(Ⅰ)Denomination
       Imperial Bricks refer to a kind of paving square bricks with high quality exclusively used for buildings especially the palaces in the Ming and Qing Dynasties.
Gold Bricks Paving Ground writes, the name "Gold Brick" (Bricks) was given for the following three reasons:
Its feature is thin but solid and it makes a sound like gold stone when knocking;
Baking a Brick requires complicated craftsmanship and costs as high as gold;
In ancient times, the Imperial Bricks could only be transported to the “Jingcang” (Capital Repository) in the Capital for exclusive use in the imperial palaces. Therefore, they are called "Capital Bricks", which is later referred to as "Imperial Bricks".
(Ⅱ)Characteristics :
Name: with a nick name as “Gold”
Shape: with upright and complete surfaces
Color: with pure cyan color like a mirror
Sound: with silvery sound when knocking, like the “Qin” (an ancient musical instrument)
Inscription: with maker’s name carved for governor to check the quality
(Ⅲ)Application 
·During the Ming and Qing Dynasties, Lumu Imperial Kiln has always been a place where the gold bricks were “made under royal decree” for the royalty.
·After the fall of the Qing Dynasty, the Bricks were not only used as ground-paving material. Refined scholars use Bricks as a elegant and cultural decoration, rendering new life to the Bricks literally.
·Now, the Bricks can be derivatively developed to practice calligraphy and made into chessboards, or even carved to exquisite brick crafts.
(Ⅳ )Imperial Bricks’ Experiencing and Suffering
A. Soil-Fetching: to pick from special clay layer and then go through 7 procedures including excavating, carrying, parching, beating, pounding (“chong”), milling, sieving;
B. Mud-Refining: the key is to go through 6 procedures including settling, filtering, airing, drying, throttling and trampling;
C. Adobe-Fabricating: the key is to go through 10 procedures including kneading, bearing, filling, milling, scraping, hammering, flipping, casting, shielding and airing
D. Drying in shade: to put adobes in shady room in non-windy days to turn over every day and clap every viewpoint with 8-month efforts;
E. Adobe-Baking: to bake adobes by chaff grass in the 1st month, wood pieces in the 2nd month,
F. granulated wood in the 3rd month and branch wood for 40 days;
G. Kiln-Hosing: the adobe-baking lasts for more than 4 months in the kiln, close the kiln and water the kiln from the tianchi on the top of the kiln. The water turns into steam once it meets with high temperature. This process renders an unique color of blue and gray to the Bricks.
H. Brick-Drawing: each piece is flawless with a pure color. Only those making a sound like gold stone when knocking can be kept and others shall all be discarded.


The surface of the yellow mud on banks of the Yangcheng Lake is very smooth and lustrous. It contains iron oxide, which is easy to cement.

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