I m taking an indirect flight from UK to Hong Kong Via Beijing. I booked all this through Air China.

I arrive in Terminal 3 and need to get to terminal 1 for my flight to Hong Kong in 1hrs 50 mins. Do you know if I have to collect my luggage then through custom again and so forth. And do I have adequate time?

When I spoke with Air China before I booked the tickets, they said the time is plenty but I dont know if they thought it is within same terminal.

Your advice would be appreciated.