Welcome to Nyang-chu Valley
The drive from Gyantse to Shigatse wends through the fertile Nyang-chu Valley (ཉང་ཆུ, 尼洋曲, Níyángqū), a wide agricultural plain following the Nyang River, fronted by dried-up glacial flows, where Tibetan farmers plough their fields with colourfully decorated livestock. If you're here in spring, you'll see giant red tassels placed on the horns of dzomo (a yak-cattle hybrid common in this area) as a sort of lucky talisman before the serious spring ploughing begins. There are a few sights of note along the way – mainly lesser-visited monasteries.
Locals say that 13 of the hills scattered down the valley are bad luck, and so atop each was built a monastery to ward off evil spirits. Drongtse and Tsechen are two of these that are worth visiting.