SYABRUBESI, Nepal — Trucks stir up dust on the gravel road here in Syabrubesi, an eight-hour drive from Kathmandu, the capital of Nepal. From Syabrubesi, the road winds 11 kilometers (7 miles) north to the border with China, the only open route north since a 7.8 magnitude earthquake in 2015 devastated much of the region. […]