Zhangmu (Chinese: 樟木) or Dram in Tibetan (Tibetan: འགྲམ, Wylie: 'gram, THL: dram, ZYPY: Zham), or Khasa in Nepali,[2] is a customs town and port of entry located in Nyalam County in Tibet, China close to the Nepal-China border, just uphill and across the Bhotekoshi River from the Nepalese town of Kodari.

Newar traders headed north from Kodari and after crossing Kuti pass turned east to continue their journey across the Tibetan Plateau to Lhasa.

China has long planned and discussed building a railway connecting Lhasa with Zhangmu on the Nepal-China border, from 2008 onwards.

[3][4][5] However, as of late 2018, its quite clear China is waiting for Nepalese government to actually seriously commit to a railway from there to Kathmandu through mountainous terrain, which is anticipated to take at least nine years to build.

[8] Chinese and Nepali officials met in December 2016 to discuss potential reopening of Zhangmu port in 2017, which was blocked by progress of road construction.