A nomadic family from the Changtang grasslands brought us their daughter's old dzi bead.
It was a "medicine bead" — hollow inside, once filled with herbs.
We refilled it with Tibetan medicine, sealed it, and sent it back.
Months later, a letter arrived.
It said only three words: "She is well."
Inside the envelope were a lock of the girl's hair, and a piece of dried cheese.
In Tibet, this means: you are family now.