This event is a "Super Event" in Bug Business that ran from Feb 1 to Feb 5, 2017.
"Build the Dance School and make the residents of your city happier! Obtain and install the Dance School by fulfilling these conditions:"
Event duration: 4 days
Event reward: Dance School
Event tasks, all platforms Edit
Resource requirements to complete the event are different for each player. The screen shot below is only a sample from one player.