Doha is 5 hours behind Shenzhen
Best overlap: 1:00 PM to 6:00 PM in Shenzhen is 8:00 AM to 1:00 PM in Doha.
Schedule calls for 1:00 PM to 6:00 PM in Shenzhen — your colleagues in Doha will be online from 8:00 AM to 1:00 PM. You share roughly 5 hours a day. That's enough for regular meetings, but treat the window as prime time and guard it.