Kammala jumla mai zuwa: Ginin gine-ginen na farko na babban cocin (wanda Bishop Augustin Henninghaus ya ba da izini) ya tsara cocin Gothic mai hawa uku, amma Yaƙin Duniya na I
cin nasarar Qingdao da Jafananci a ranar 16 ga Nuwamba, 1914, ya kawo ƙarshen shirin babban coci. Birnin ya koma karkashin mulkin kasar Sin a watan Disamba na shekarar 1922, a karkashin ikon Jamhuriyar China. An sauya sunan Vicariate Apostolic na Kudancin Shan-tung zuwa Vicariate Apostolic na Yanzhoufu a ranar 13 ga Disamba, 1924, kuma a ranar 22 ga Fabrairu, 1925, an kafa Prefecture Apostolic na Qingdao daga yankinta, tare da Bishop Georg Weig, SVD, wanda aka nada shi a ranar 18 ga Maris na wannan shekarar. A ranar 14 ga Yuni, 1928, an ɗaukaka shi zuwa Vicariate Apostolic. Lokacin da aka ci gaba da ginin, shirin Gothic na asali bai ƙara dacewa da yanayin garin Qingdao na zamani ba. Uba Alfred Fräbel ya tsara tsarin neo-Romanesque na yanzu, wanda aka gina a lokacin Bishop Weig, wanda aka binne a cikin babban coci.