How much time do I need for a international to domestic connecting flight at PEK?

Hi, I am a US passport holder. Traveling to Chengdu via Beijing on the 3/08. My arrival terminal will be at T2; and my connecting flight will be leaving out of T3 (Air China). My arrival time will be at 3:10 PM. I am looking to book 5:00 PM flight on Air China. Will this be enough time to connect? Thanks. look forward to hear from you