Dab tsi yog Chav Dej Txee

Lub txee chav dej yog lub txee rau khaws cov khoom hauv chav dej. Nws cov ntaub ntawv saum npoo tuaj yeem muab faib ua pob zeb ntuj, jade, pob zeb dag, hluav taws kub board, ci xim, iav, hlau thiab khoom ntoo. Cov khoom siv hauv paus yog lub cev tseem ceeb ntawm chav dej txee, uas yog zais los ntawm cov khoom siv saum npoo. Lub substrate yog qhov txiav txim siab rau qhov zoo thiab tus nqi ntawm cov khoom siv hauv chav dej. Thaum nqa, nws yuav tsum maj mam nqa thiab muab tso rau, tsis rub nyuaj; Thaum muab tso rau, hauv av yuav tsum tsis sib npaug, thiab ob txhais ceg yuav tsum ruaj khov.