Lus piav qhia luv luv:

Xauv cov txiaj ntsig ntawm nyias phab ntsa txhaj tshuaj molding los tsim lub teeb yuag, ruaj khov, thiab cov khoom yas siab. Qhov zoo tshaj plaws rau kev lag luam xws li ntim khoom, khoom siv hluav taws xob, tsheb, thiab cov khoom siv kho mob, cov txheej txheem no tso cai rau kev tsim cov khoom zoo, nyias-walled Cheebtsam nrog lub zog tshwj xeeb thiab txo cov khoom siv.