Raws li kev soj ntsuam, ntau tus neeg lag luam cov lag luam thiab cov neeg lag luam tseem pheej nyuab hloov vim kev lag luam thiab cov cwj pwm ntawm cov neeg siv. Lawv siv cov hnab yas ultra-thin hauv khw, lossis muab cov hnab yas pub dawb rau cov neeg siv. Qee tus neeg yuav siv cov tswv lag luam los muab cov hnab yas rau khoom, thiab qee tus tswv lag luam thiab cov tswv teb cov tswv teb nug txog thaj tsam ntawm cov hnab ntim khoom ua ntej, uas yuav ua rau muaj teeb meem hauv "kev txwv yas".
Nws yog tsim nyog sau cia hais tias lub lag luam tsis muaj cov hnab yas ultra-thin hnab thaj tsam zoo siab; Cov hnab yas ntim ultra-thin hnab ntim khoom muag tam sim no ntau dua, siv sij hawm so ntawm tag nrho cov muag khoom ntawm lub hnab yas muag khoom, nrog lub tsheb kauj vab rau hauv hnab yas nyias, nyob hauv kev lag luam tsis yog kev muag khoom hauv xov tooj, tsis muaj teeb meem me me los soj ntsuam haujlwm.
