visa needed ? customer services are VERY confused about this

hi! we are 2 adults ( 1 Italian and 1 Taiwanese ) . We want to go round trip to Italy but we noticed that we will pass by SHANGAI airport for a layover of 15 hours more or less. 1 Taiwanese can get the quick entry permit in a travel agency in Taipei but what's about me ( 1 Italian ) ? Do I need an entry permit for a layover in Shangai? In case I need it, where can I take it ?