Cov cuab yeej siv hauv tsev tso quav kuj tseem hu ua: tshuab ntawv tso quav tso quav, ntawv tso quav tso quav, thiab lwm yam. Cov khoom siv hauv chav dej feem ntau suav nrog: cov ntaub ntawv tso quav tso quav, band pom ntawv txiav tshuab, sealing tshuab, thiab qee qhov ...
Nyeem ntxiv