A group of four blue and white ginger jars, China, 19th-20th century-A-group-of-four-blue-and-white-ginger-jars-China-19th-20th-century (一组四个蓝色和白色的姜罐,中国,19-20世纪-四人一组蓝白姜罐中国19-20世纪)
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Five pairs of Complementary Colours forming a Chromatic Circle. Each Colour has its Complementary directly opposite (1912) --James Ward (Irish, 1851–1924)