National Geographic : 1930 Feb
A TEA CARAVAN HALTED IN THE SONG CHU GRASS LANDS WEST OF LABRANG The caravan consisted of 800 yaks and had been 20 days en route from Sungpan, in northwest Szechwan. The tea, ofthe poorest grade, was com posed of large leaves and twigs. It was grown in the Min River Valley, near Kwanhsien, in Szechwan, ten days south ofSungpan. InKwanhsien this tea sells for $3.00 a bale of 120 pounds, but in the grasslands the price goes to $30 and $40 a bale.