As @
Bianchigirll notes above, an Asian built Bianchi should be English thread. And as @jianshi notes, the bottom bracket cups should be marked with thread type: 1.37 x 24 for English, 36 x 24 for Italian.
N.B. shell width (e.g. 68mm versus 70mm) should be seen as an unreliable indicator of thread spec. More than a few Japanese production bikes were made with 70mm shells and English thread.