You can't summarize it in one paragraph... However, I will try.
Since the begenning of time, when the first settlers came to China. The Chinese have been a remarkable civilization. From the technlogies to it's philosophies. It has been ruled by Emperors who have tried to unite China. Those who succeed were usually blessed with a Dynasty which lasted for a while. The Chinese have prospered and suffered.
Then, whatever you want your thesis or whatever era you waant on more specifics as the last 2 sentebces. You can't really summarie into one paragraph, jsut like you can't summarize the entire Roman civlization into one paragraph. What I would reccomend is get into some specifics.