The Invention And Development Of Ancient Toothbrushes In My Country 2021-04-12
Daoyuan, a famous Japanese monk who had studied in China, described in his book "Zhengyan Fa Zang" that he had seen the tufting toothbrush used by monks in China at the time of the Song Dynasty. The book reads like this: "In April of the sixteenth year of Jiading in the Great Song Dynasty, Guiwei (1
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