I have to get from Pudong airport terminal 2 to terminal1 is it easy.

Yes, it is easy. There are free shuttles between T1 and T2 in Pudong Airport running from 6:00 to 24:00 at an interval of 10 minutes. The bus route is listed below: T1 (Domestic Departure Gate 1 and International Departure Gate 8) to T2 (Domestic Departure Gate 23 and International Departure Gate 27). I hope my advice may help you.