I roto i te ao pūtaiao, ko ngā raraunga tika te mea nui, ka horapa ngā hapa i roto i te taiwhanga i runga i tētahi mekameka huna: te horoi → ngā paru toenga i runga i ngā oko karāhe → te paru tauira → te peka ke o ngā raraunga → ngā whakatau pātai. I ngā wā o mua, e kiia ana te tukanga horoi he "mahi whakahaere" motuhake, tuarua hoki, e whakawhirinaki ana tōna kounga ki ngā mahi ā-ringa kāore e taea te whai. Heoi, i te mea ka kaha haere ngā tikanga rangahau me ngā pūnaha whakahaere kounga, kei te neke haere tēnei tukanga mai i te papamuri ki mua, ka puta hei pūwāhi whakahaere nui e whakatau ana i te pono o ngā raraunga whakamātautau.

I runga i tēnei horopaki, kua whanake te Miihini Horoi Pounamu Aunoa a Xipingzhe mai i te "taputapu horoi" noa iho hei pou mātanga mō te tiaki i te pono o ngā raraunga taiwhanga me te tutuki i ngā tukanga. Mā te huri i ngā rerengamahi ā-ringa whaiaro, koretake ki ngā tikanga paerewa whai take, ka taea te tuhi me te manatoko, ka hangaia he rārangi parepare pono i te pūtake o te whakaputa raraunga.

Ko te horoi paerewa he nekehanga mai i te mahi e whakawhirinaki ana ki te wheako ki te tukatuka e whakahaerehia ana e ngā tawhā. Ko te horoi ā-ringa te mea e ārahihia ana e te wheako: ko te tere rere o te wai, te kaha o te horoi, te wā rumaki, me te auau horoi ka rerekē katoa i runga i te kaiwhakahaere, tae atu ki te āhua tinana me te hinengaro o te kaiwhakahaere i tētahi rā. Ko ēnei taurangi he "āhuatanga kore e kitea" e kore e taea te ine i roto i te whakamātautau.

Ka hurihia te āhua o tēnei tauira e te Mīhini Horoi Pounamu Aunoa a Xipingzhe. Ka whakamāoritia, ka whakapūmautia hoki ngā tawhā horoi katoa, tae atu ki te pāmahana wai, te pēhanga wai, te kukū o te kaihoko horoi, te roa o te rehu, ngā wā horoi, tae atu ki te pāmahana me te roa o te whakamaroke. Ko ia kaupapa ritenga, ia kaupapa kua whakaritea rānei, he "tikanga horoi" ka taea te maumahara, ka taea te whakahoki.

Ko te tikanga o tēnei, ina oti te whakawhanake me te whakamana i tētahi kaupapa horoi mō ngā whakamātautau motuhake—pērā i te tātaritanga konganuku iti, te ahurea pūtau, me te whakarite tauira HPLC—ka taea te tāruarua tika i ngā wā mutunga kore. Ahakoa te wā, te tangata rānei e whakahaere ana i te mīhini, ka mau tonu te paerewa horoi o ngā karāhe i horoia ki te kaupapa kotahi. Mā tēnei ka whakakorehia ngā taurangi e whakawhirinaki ana ki te kaiwhakahaere, ā, ka whakaratohia he tīmatanga ōrite mō ngā whakamātautau katoa e whai ake nei.