Puas yog lub laj kab tiv thaiv tsim nyog rau lub tshuab tov khoom?
Tiv thaiv laj kab tsis tsim nyog tab sis tseem ceeb.tshwj xeeb tshaj yog rau ntsug tov khoom tshuab, zoo li v tov khoom, ob lub khob khob tov khoom, 3d tov khoom.
Thaum lub tshuab ua haujlwm, sib xyaw lub cev nruas yuav tig, yog lub tshuab muaj kev tiv thaiv fency, nws yuav tiv thaiv tib neeg los ntawm kev puas tsuaj.
v tov khoom nrog lub laj kab tiv thaiv
3d tov khoom nrog lub laj kab tiv thaiv