(■1) Kei - Relationship

... The period from the 10th to 9th century BC, i.e. the middle of the Western Zhou period, was a time of remarkable change in social customs and religious ideas, and auspicious jewels such as those attached to the handles of ladle-shaped objects appeared in response to this change. In the classics of the late 1st millennium BC, these were called kankei. The production of animal-shaped jade objects, which had been common in the previous period, declined in the 10th to 8th centuries BC.

*Some of the terminology explanations that mention "(■1) Kei" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　前10～前9世紀の交，すなわち西周中期は社会慣行，宗教観念の顕著な変革期に当たるが，それに対応して出現した瑞玉として，勺の柄に取り付ける玉がある。前1千年紀末の古典中で圭（かんけい）と呼ばれるものである。前10～前8世紀には前の時期に多かった動物形の玉器の製作は衰える。…

※「(■1)圭」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報