Nruab nrab tus nqi da dej yog thawj qhov kev xaiv
Raws li kev sojntsuam, cov khw muag khoom hauv lub khw muag khoom pheej yig, yog qhov kev xaiv ntawm cov neeg siv.
Thiab qhov nruab nrab chav da dej, tus nqi ntawm 4500-11000 yuan (1 metres ntawm 1 metres), kev ua haujlwm, kev ua haujlwm, kev pab cuam tom qab muag yog ib qho kev paub tab. Cov khoom no muaj nyob rau hauv kev ua lag luam loj, thiab muaj feem ntau ntawm kev lag luam. Yog li ntawd, tom qab muag kev pab cuam kev ruaj ntseg dua li lwm yam khoom ob. Ntxiv rau qhov pom ntawm kev ua tau zoo thiab tsim, nruab nrab cov khoom siv rau kev qhia txog cov khoom siv txawv teb chaws thiab cov tuam txhab tsim khoom, cov khoom siv, kev tsim, thiab tsim cov chav da dej yog pib los ntawm txawv teb chaws, kev ua tau zoo me ntsis tsawg dua cov khoom txawv teb chaws, tab sis qhov zoo thiab kev ua haujlwm ntawm tsis tsawg.
