River Winds right scroll of a triptych, mid 18th century, Ch? T?sai, Japanese, 1713 - 1786, 45 ¡Ñ 9 3/8 in. (114.3 ¡Ñ 23.81 cm) (image), Ink on paper, Japan, Seal script (tensho), Ch? T?sai used a dry brush to create a distinctive writing style that is rather round and rolling, giving the otherwise linear seal script an interesting sense of fluidity.