Last weekend's Shanghai trip by Hong Kong legislators was progress of a kind. At least senior Communist Party officials held talks with some of Hong Kong's pan-democrats. But was it a substantive step, or just an exercise in appearances? With us in the studio to discuss it are the Civic Party's Alan Leong (who didn't go) and the Democratic Party's Sin Chung-kai (who did). Hong Kong is overcrowded, and doesn't have enough living accommodation. No big surprises in either of those statements. It also has high property prices, which the government says are coming under some semblance of control. Meanwhile, parts of the mainland have very much the opposite problem. Take the example of the Kangbashi New Area development, part of the city of Ordos in Inner Mongolia, which is a ghost town.