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fine grain history

The fine grain is called "grass splitting force" in Korean, and is commonly known as "pipe" in the folk. The history of Xiuji is very long, and the Korean Xiuji originated from ancient times. During the Western Han Dynasty, Bili was spread in the Western Regions of Qiuci, entered the Central Plains in the 4th century AD, and then spread to Korea in the east. Accor...
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