There's a whole parallel universe of Guangzhou that non-locals -- including non-locals from other parts of Guangzhou -- usually don't get to see: the network of pedestrian & bicycle alleyways located just off the traffic-dominated roadways. Following these networks it's possible to traverse huge portions of the older districts of Liwan, Haizhu and Yuexiu while only very occassionally coming across a street used by cars.
Far from being a curious or quaint oddity, as for example is the case with the much-overhyped hutongs in Beijing, these alleyways are part of the daily lived experience of the large majority of residents in these districts. As for the other districs, especially the newer areas of urban expansion since around 2000, they realize too late -- if they realize at all -- that these pedestrian spaces are the keys to the lifeblood, vibrancy and appeal of Guangzhou.
Guangzhou tourist promotions tend to focus on particular landmarks or buildings or foods whereas the real appeal of the city is not in any particular building or park or whatever, but in the living pedestrian streets and public spaces, and the varies and vibrant spaces between buildings that make up its DNA.