Gormley's 'alien invasion' looms large over Hong Kong Occasionally obscured by mist and low cloud, shadowy human figures loom from the tops of Hong Kong skyscrapers causing curiosity and consternation in the streets below. It could be a scene from a science fiction film - in fact it is the arrival of sculptor Antony Gormley's Event Horizon project in the southern Chinese city. IMAGES AND SOUNDBITES