A boy walks on a smart piano footpath in Beishan Park in Yangquan city, on May 17. Yangquan plans to develop Beishan Park into an intelligent park with various intelligent facilities such as smart waste bins, self-help vending machines and augmented reality entertainment facilities being installed and constructed in the park. [Photo/yqnews.com.cn]

Children try out an augmented reality interactive screen in Beishan Park in Yangquan city, on May 17. [Photo/yqnews.com.cn]