Kev cob qhia ntawm tus tsiaj tsis yog qhov nyuaj, vim tias tus dev yog ntse thiab yooj yim rau kev cob qhia. Qhov tseem ceeb tshaj plaws yog kom ruaj khov, ncaj ncees thiab qhuas tus menyuam dev ntau dua. Koj tsis tuaj yeem tham nrog nws siv lub suab qw, rau lub cev rau txim rau nws. Nws yog ib qho tsim nyog yuav tau tsa tus menyuam txij thawj hnub hauv tsev tshiab.
in dev