Whakakī i te rerenga e whai ake nei: 1960s1970s: I haere tonu a Lin ki te whakawhānui i te tohunga o tana umanga i roto i te raima kua oti te whakarite ki nga ratonga tohutohu whanui, me nga kaupapa e whakauru ana i te raima whakakaha, te maitai hanganga, te taiepa, me nga hanganga rakau-whakaputaina. I te tau 1967, i hoahoatia e ia te whare 18-papa o te pakitara Bank of America i Managua, Nicaragua. Ko te pourewa raima whakakaha tētahi o ngā hanganga e rua anake i mahue i muri i te hinganga o te whenua
Te ru o te tau 1972. I mohiotia hoki a Lin mo ana mahi auaha, penei i te Rio Colorado Bridge, he piriti whakairi i runga i te awa hohonu i Costa Rica. I te tīmatanga o te tekau tau '70, i whakatūria hoki e te umanga he tari ki Taiwan me Singapore.