Cov txuj ci kev sib txuas lus yog ib qho cuab tam tseem ceeb rau kev tshaj lij thiab kev siv kev sib raug zoo, thiab chav kawm no muaj qhov zoo tshaj plaws
Cov txuj ci kev sib txuas lus yog ib qho cuab tam tseem ceeb rau kev tshaj lij thiab kev siv kev sib raug zoo, thiab chav kawm no muaj qhov zoo tshaj plaws