A total of 19 square dancing teams participate in the preliminary round of the Hai'an 7th Square Dancing Competition held in a high-tech zone in Hai'an, Nantong, a city in East China's Jiangsu province, on July 22. Hai'an launched the competition in May to celebrate the 70th anniversary of the founding of the People's Republic of China. A total of 103 teams and over 1,400 square dance enthusiasts have signed up to participate in the competition. [Photo/IC]