Fig. 4From: Polychrome arhat figures dated from the Song Dynasty (960–1279 CE) at the Lingyan Temple, Changqing, Shandong, Chinaa and d the micrographs of paint layers cross-sections under the annular light source (dark field), b and e the micrographs of the paint layers cross-sections in coaxial light source (bright field), c and f the pigment particle distribution maps were fitted by the micrographs under coaxial light sourceBack to article page