In Chanoyu, when serving tea to a guest, the cha-wan, 茶碗, tea-bowl, may be placed on a ko-buku-sa, 古帛紗, old-cloth-gauze. The kobukusa is also used to display a revered object. There are countless types of fabrics, including treasured cloths from the past and also of foreign origin. The type of fabric reveals the choice and taste of the owner. Of the several sizes of kobukusa, the standard measures 4 x 4.2 sun kujira-jaku.The diagonally measurement is 5.8 sun kujira-jaku. The number 5 may represent the Go-rin, 五輪, Five-rings, principles, and the Go-gyō, 五行, Five-transitions, and the number 8, hachi, 八, is symbolic of Infinity in Space. When...