hēi yào shí
obsidian (mining)
黑
hēi
abbr. for Heilongjiang province 黑龍江|黑龙江[Hei1 long2 jiang1]
曜
yào
bright
石
shí
abbr. for Shijiazhuang 石家莊|石家庄[Shi2 jia1 zhuang1], the capital of Hebei
