From T1 to T2 at Beijing Airport

Hi my parents is flying from Guangzhou to Toronto, Canada. They will land at T1 and then take the connection flight at T2. (Hainan airline).

Questions:
How long is it from T1---->T2, need to take shuttle bus? or is walking distance. They only have two hours to claim the luggages and "run" to T2, hope not too tight.

Thanks,
Keenny