Hong Kong and Singapore are rivals on many fronts. The two former British colonies compete for everything from tourist dollars to stockmarket listings and the right to host the regional headquarters of international corporations.
Politically, many Hongkongers deride Singaporeans for their weak political freedoms, while some in Singapore argue that Hongkongers' love of protesting goes too far.
But the two sides are locked in a new battle - perhaps a surprising twist in this ago-old contest - and it indicates that the two have rather more in common than they would care to admit.
Despite their wealth - Singapore and Hong Kong rank third and seventh on per capita GDP according to the World Bank - the two cities are among the least happy territories in the world, according to a Gallup poll released last month. Full story
