Luo 羅 is a kind of light weighted silk woven with stranded warps, which were loved by ancient people because it feels cool and comfortable. Because of these valuable qualities, luo was the most expensive sort of silk in ancient times, which indicated the popularity and good economic status of the two courtesans.
Shan 衫 is a sort of tops in ancient China.
Luoshan in the Song Dynasty (906-1279)
