What are most fascinating about the modernized Beijing ?They are not the skyscrapers or broad streets, but the winding, secluded hutong, where there are beautiful siheyuan.It is called “hutong culture”and “sihuyuan”culture.It was first formed in Yuan dynasty. Man-powered tricycles, a means of transport typical of old Beijing, will take you to enjoy a view of the old city crisscrossed by lanes.