Chief executive of the Hong Kong Special Administrative Region Donald Tsang (4th, left) and actor Donnie Yen (2nd, right) attend the unveiling ceremony of the "Aqua City" in the Ocean Park in Hong Kong, south China, Jan. 26, 2011. [Xinhua/Song Zhenping] 

Visitors look at the aquatic creatures in an aquarium of the "Aqua City" in the Ocean Park in Hong Kong, south China, Jan. 26, 2011. Chief executive of the Hong Kong Special Administrative Region Donald Tsang attended the unveiling ceremony on Wednesday. [Xinhua/Song Zhenping]