Some old people in the park left and right hand each holding a stick back and forth picking another two big center thin stick, who knows what it is called fitness equipment?

This sport is called the bamboo, in fact, the earliest is a game.

The game is generally known as shake bamboo, also known as shake empty bell, shake empty zheng, shake buzz, Jiangnan also known as pull bell. However, most of them are generally referred to as "air-bamboo". It is a splendid flower in the traditional Chinese Han culture. Popular in all parts of the country, Tianjin, Beijing and Liaoning, Jilin, Heilongjiang and other places are especially prevalent.