Shenzhen is 7 hours ahead of Rome
Best overlap: 8:00 AM to 11:00 AM in Rome is 3:00 PM to 6:00 PM in Shenzhen.
Rome and Shenzhen overlap from 8:00 AM to 11:00 AM (Rome) to the equivalent 3:00 PM to 6:00 PM in Shenzhen — that's your meeting window. The overlap sits at about 3 hours; aim for the heart of it so the call isn't too early for one team or too late for the other. Bear in mind Rome shifts for daylight saving while Shenzhen stays fixed — recheck these hours after each clock change.