Hello Dear Friends: I got these 2 Mountain bikes this summer, for myself and my GF, now because of some of my own reason, we will not use them, the Black one is a gift from one of my best American friend, he made it up by himself the white one, I bought it in a Mall, none of these bikes is from Taobao or other online shops both of these two bikes are in nice conditions with lock currently I live in Changping but work in Chaoyang, I'm intending to sell it on 600rmb per bike but can be negotiable if you buy two together