There are several night trains each day from and to Hanoi (about 9h, ca. 20$ for a soft sleeper depending on the train).
Buses run from Kunming and other cities in Yunnan (China) to Hekou from where it is only a short walk over the border to Lao Cai. The border is open from 7am to 5pm (8am to 6pm Chinese time).
The Most Frequently Asked Travel Questions about Lao Cai
Where To Stay & Best Hotels in Lao Cai - updated May 2024
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Lao Cai Travel Guide from Wikitravel. Many thanks to all Wikitravel contributors. Text is available under Creative Commons Attribution-ShareAlike 3.0, images are available under various licenses, see each image for details.