碧土 Traditional form: 碧土 Pinyin (reading): Bìtǔ Definitions: Putog, former county 1983-1999 in Zogang county 左貢縣/左贡县 ( Zuǒgòngxiàn), Chamdo prefecture, Tibet Characters: 碧 - jade; green, blue 土 - soil, earth; items made of earth Traditional characters: 碧 - jade; green, blue 土 - soil, earth; items made of earth