The two iron balls held by the old man are fitness balls.

For example, Baoding Fitness Ball, also known as Wang Blacksmith Fitness Ball, is a favorite sports equipment of Baoding people. Middle-aged and elderly people in Baoding especially like to play. They usually play two fitness balls in one hand to relax and keep fit. At the same time, Baoding fitness ball is a unique traditional folk handicraft in Baoding and the best gift for relatives and friends.