Shanghai Pudong in-transit meeting

Two friends I have not seen in years will arrive in Shanghai Pudong Airport Terminal 1 on China Eastern Airlines and transit out via Terminal 2 on United Airlines. Their stay in the airport will be 3 and a half hours.

I arrive in Terminal 1 on China Eastern Airlines shortly before they do. I will transit out via Terminal 1 also on China Eastern Airlines about 4 hours later.

They are nervous about waiting anywhere other than the area of their connecting flight. Will I be allowed to sit with them in Terminal 2 before making my way back to Terminal 1 ?

I am on a Canadian passport. I do not speak Chinese and I do not want to make a fuss inquiring with the airport security staff.