Voice control shout fountains

Where: Xi’an, Shaanxi, China You are angry and want to shout out but don’t have time to get out of the city, not a problem at all for Xianese. There is a fountain in Xi’an which welcomes everyone to shout out next to it as it works only when people stand from both side and shout as loud as they can. The louder the voice, the higher water goes. This is a place where unknown people unite for a common goal for several minutes. It looks very fun!