Daim ntawv tso quav tso quav, peb tau siv, nws yog ib qho chaw pej xeem hauv cov khoom siv kho mob pov tseg.Feem ntau siv hauv tsev so, chaw ua haujlwm, tshav dav hlau thiab lwm qhov chaw pej xeem los so tes hauv chav dej, tau kawg, kuj tsim nyog rau tsev neeg.