Thaum sib ntaus sib tua kab hluav taws nrog cov cuab yeej tua hluav taws hauv hav zoov, sawv ntawm sab hauv ntawm qhov hluav taws kub nrog ob txhais taw lossis ib ko taw sab hauv ntawm ntug, thiab ob txhais taw sab nraum ntug.Siv lub cuab yeej cheb diagonally rau hauv qhov hluav taws kub, thiab ua lub kaum sab xis ntawm 40-60 degrees.
Ib tug ntaus, lub caij no ib tug mop, tsis txhob tsoo ncaj nce thiab nqis, thiaj li tsis mus nthuav cov nplaim taw tes txaws, thiab ua ib lub teeb nqa, thaum ua si rau hauv.Thaum hluav taws tsis muaj zog, koj tua tau ib leeg.Thaum hluav taws muaj zog, pab pawg tua hluav taws sib ntaus sib tua hluav taws nyob rau tib lub sijhawm, nrog tib lub nce thiab poob, txav mus rau pem hauv ntej ua ke .tom qab tua hluav taws.