Yuav tsum pub lub zog, teeb liab, thiab cov ntaub ntawv yog qhov yuav tsum tau ua hauv kev tsim hluav taws xob thiab kev tsim vaj huam sib luag. Cov khoom siv rwb thaiv tsev, lub kaw lus sib txuas thiab kev tsim cov thaiv davhlau ya nyob twg yog cov yam ntxwv sib txawv. Lub thaiv davhlau ya nyob twg pub-dhau yog qhov tsim nyog rau kev koom ua ke thiab / lossis txuas ib lossis ntau tus neeg xa xov. Lawv tuaj yeem muaj ib lossis ntau qib kev sib txuas uas nyob ntawm tib lub peev xwm lossis rwb thaiv tsev tawm tsam ib leeg.