1. Kab hlau rhuav phab ntsa tsim tus thawj tswj ua haujlwm xav tau:-degree qib siab lossis siab dua, kev txawj kho tshuab / tsim vaj tsev, thiab lwm yam, nrog kev mloog lus Askiv zoo, kev hais lus thiab sau ntawv; -Ua ntau tshaj 5 xyoo ntawm kev paub txog cov ntaub thaiv phab ntsa tsim thiab kev tswj hwm hauv Hong Kong, Macau, thiab txawv teb chaws (Tebchaws Europe, ...
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