The "egg" lights up the Middle Ring Road over the square in Wujiangchang (五角场) in Yangpu District and is a scenic highlight of the city's newest emerging commercial and business center.
The "egg" had been initially lit by 1,000 LED diodes and 500 inner photo-permeable lights since September, 2005. The LED diodes change color every 10 seconds and they can show red, orange, yellow, green, blue, indigo and violet.
Starting from June 1 to National Day golden week in October., the "egg" will show motion pictures on holidays or special events as a trial. The display is controlled by computer.
Wujiaochang where was once a less developed area in the bustling Shanghai even at later 90's is being built into a commercial and entertainment complex to rival the bustling Xujiahui area in the city's southwest.
