<https://www.lotussiatravel.com/san-chay-ethnic-group/>
<http://schema.org/description>
"The San Chay ethnic minority, also called Cao Lan, San Chi, Man Cao Lan, Hon Ban are concentrated in Tuyen Quang, Thai Nguyen, and Bac Giang provinces."
<https://www.lotussiatravel.com/san-chay-ethnic-group/>