A large number of children and parents crowd around exhibits at Liaoning Science and Technology Museum in Hunnan district in Shenyang, capital of Liaoning province. Visitors can get free tickets to the museum by booking online during the summer vacation. The museum promotes scientific knowledge to its visitors and offers interactive experiences at 95 percent of its exhibits. [Photo/Xinhua]

A child uses an old-fashioned telephone at Liaoning Science and Technology Museum in Shenyang. [Photo/Xinhua]