The Chinese god and goddess Fu Hsi/Xi and Nü Wa/Gua, measure the “‘squareness of the earth’ and the ‘roundness of heaven’ with their implements, the square with the plumb bob hanging from it, and the compass”.
Stein, Sir Mark Aurel. Innermost Asia. 3 vols. Oxford, England: Clarendon Press, 1930. Vol. 3, plate 108. (accessed July 15, 2022).
PAINTED SILK HANGING, AST. IX. 2. 054 SHOWING FU HSI AND NÜ WA
(See Chao. XIX. sec. III. vi).