In recent days the south of China has been battered by the most torrential rainstorms seen for six years, to the extent that residents in Shenzhen have been taking to the inundated streets to go fishing. In the newly constructed Nanshan district, carp presumed to have escaped from nearby fish farms swam freely along the streets of Shenzhen, their brief taste of freedom abruptly ended as they frolicked past Shenzhen University’s west gate and hungry students snatched them up with their bar hands.