An awards ceremony for the 30th Jiangsu Youth Science and Technology Innovation Competition is held on March 24 in Nanjing, East China’s Jiangsu province. A total of 58 projects submitted by Nantong students won awards at the competition, with 13 projects winning first prize. [Photo/Jianghai Evening News]

One of the prizewinners makes a speech during the awards ceremony. Some 400 contestants from 13 prefecture-level cities in Jiangsu province took part in the various events hosted during the competition, including the opening ceremony, project roadshow, and science seminars. [Photo/Jianghai Evening News]

An urban street lamp energy-saving system based on wireless communication control designed by Nantong students is displayed at the competition. A wireless communication module is installed on each street lamp. When a vehicle passes under, the street lamp automatically lights up, and three seconds after the car has passed, it automatically switches off. [Photo/Jianghai Evening News]