Cov qhov rooj nkoj yuav muaj cov tuav txhawb nqa kom ntseeg tau tias cov khoom thauj ruaj khov thiab muaj kev nyab xeeb thaum lub sijhawm thauj mus los. Cov pas nrig txhawb nqa feem ntau yog ua los ntawm hlau thiab tuaj yeem hloov kho rau qhov kub thiab qhov chaw.
