Nws yog ua los ntawm high-zoo hlau pas nrig thiab ces ua tiav.Cov khoom siv yog tsim rau cov ntoo mos thiab tawv, cov khoom siv xyoob, cov khoom siv yas, lub ntiaj teb phab ntsa xuab zeb, kho rooj tog, ntim cov thawv ntoo, thiab lwm yam. Siv dav hauv kev tsim kho, kho kom zoo nkauj, kho kom zoo nkauj kev lag luam.