Kev tshuaj xyuas cov khoom siv yuav tsum tau siv ua ke nrog cov ntaub ntawv tshuaj xyuas cov ntaub ntawv. Cov khoom siv hauv qhov teeb meem no suav nrog hnab tes, kaus mom, siv tawv, phuam qhwv caj dab, hnab looj tes, ties, hnab nyiaj thiab cov rooj plaub tseem ceeb. Main checkpoint · Siv seb qhov ntev thiab dav yog raws li tau teev tseg, seb lub buc ...
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