Kev kho dua tshiab ntawm lub tsev lossis chav tsev yog qhov tseem ceeb hauv kev ua tiav ntawm lub qab nthab nyob hauv txoj haujlwm tseem ceeb. Nws yuav tsum tau muab sau tseg tias nyob rau hauv ntau lub tsev mus rau niaj hnub no muaj ntoo ceilings, ua hauj lwm nrog uas muaj ib co nuances. Piv txwv li, lawv yuav tsum tsis txhob muab tso rau "pob" thaiv, nws yuav tsum nyob rau hauv qhov pom