Nepal Mist was a cross between a pure wild nepalese kathmandu and an old kali mist male, it doesn't contain china yunnan.
I worked the hybrid until F3 generation and made a few hybrids between 2002-2008, i especially liked an accidental Green Haze x Nepal Mist F2 cross that was amazing, but lately i'm not working on them, unfortunately some seeds lines were lost or didn't germinate properly after a few years.