Ka cika wannan jumla: Yayin da rayuwa a Shamian ta kasance cikin kwanciyar hankali da kwanciyar hankali, rayuwa a wajen tsibirin ga Sinawa ba haka ba ce. Rashin gamsuwa da daular Qing ya haifar da zanga-zangar da kuma kawo karshen sa. Yaƙin Sino-Japan na biyu ya sa aka janye ma'aikatan ofishin jakadancin a Fuzhou a 1934 da Canton a 1938. Bayan na Japan
mika wuya ga Allies, da yawa US consulates a kasar Sin sake bude. Tsawon watanni da yawa a cikin 1949, bayan gwamnatin kasar Sin ta koma hedkwatarta daga Nanjing zuwa Guangzhou, Tsibirin Shamian ya zama wurin "Ofishin Jakadancin" na Ma'aikatar Harkokin Waje. Yayin da yakin basasa ya barke tsakanin sojojin Nationalist da na Kwaminis na kasar Sin, gwamnatin Nationalist ta sake yanke shawarar matsar da kujerar gwamnati zuwa Chungking (Chongqing) kuma Ofishin Jakadancin ya biyo baya. Ofishin jakadancin Canton da kansa an rufe shi a watan Agusta, 1949, kuma dangantakar diflomasiyya tsakanin gwamnatin kwaminisanci na kasar Sin da Amurka ta daina jim kaɗan bayan haka.