Cov tsheb thauj khoom siv tau muaj lawv tus kheej cov yam ntxwv. Lawv qhov zoo tshaj plaws nyob rau hauv lawv tus nqi qis dua, uas yuav pab txuag tau cov nqi tau txais; qhov no ua rau lawv muaj kev xaiv zoo tshaj plaws rau cov neeg lag luam lossis cov neeg tsav tsheb ywj pheej nrog cov peev nyiaj tsawg. Thaum kuaj xyuas thiab tswj xyuas kom zoo, cov tsheb no tuaj yeem muab tso rau hauv kev pabcuam tam sim, tso cai rau kev xa tawm sai ntawm kev thauj mus los.
Hais txog qhov zoo ntawm cov tsheb thauj khoom siv, tus nqi kom zoo dua yog, thawj thiab qhov tseem ceeb, tseem ceeb heev. Piv nrog rau kev yuav ib lub hom phiaj - lub tsheb tshiab, tau txais ib lub tsheb thauj khoom siv tau tso cai rau ib qho kev nyab xeeb rau kev thauj mus los ntawm tus nqi qis, yog li txo cov peev txheej thawj zaug. Piv txwv li, thaum lub tsheb tshiab ntawm tus qauv tshwj xeeb yuav raug nqi 200,000, tus neeg siv khoom siv yuav raug nqi tsuas yog nyob ib ncig ntawm 100,000- qhov sib txawv uas tuaj yeem txo qis kev ntxhov siab nyiaj txiag. Tsis tas li ntawd, txawm hais tias qee lub tsheb thauj khoom siv tau tau sau ntau xyoo hauv kev pabcuam, yog tias tus tswv yav dhau los tswj lawv kom raug, lawv qhov xwm txheej tag nrho tseem zoo; tom qab kev tshuaj xyuas thiab kev kho qhov tsim nyog, lawv tuaj yeem muab kev pabcuam txuas ntxiv. Ntxiv mus, qee cov tsheb thauj khoom siv tau dhau los ntawm lawv qhov pib "tawg-hauv" theem; Yog li ntawd, lawv cov kev ua tau zoo yog qhov ruaj khov, thiab qhov ua tau ntawm kev ua haujlwm tsis zoo thaum lub sijhawm ua haujlwm tom ntej yog qhov sib piv qis.
