where to transfer from 916 to local bus

Since signs/announcements are only in Chinese how will I know when i am at the correct stop (huairou beidajie) what does that look like in Chinese or how many stop from dongzhimen to huairou beidajie? And how hard will it be to locate one if the h buses that will carry on to mutianyu? Thinking of doing this on my own as I don't want to spend all day but also want to get where I'm going. I'm also cheap so don't want to rent a car.