Los ntawm ancient sij hawm mus rau niaj hnub lub sij hawm, lub hauv paus ntawm tag nrho cov tub rog kev ua ub no nyob ib ncig ntawm ib tug tseem ceeb ntawm "hmoov thiab ntaub thaiv npog", uas yog tua thiab tiv thaiv.Nrog kev nce qib ntawm kev ua tub rog tsis tu ncua, ...