Children Welcome the Start of Spring in Beijing

A boy dressed in traditional costume "whips" a figure of an ox with a wicker stick at the Ancient Observatory in Beijing, Feb 4, 2018. Children whip figures of oxen and play with pinwheels at the Ancient Observatory in Beijing to celebrate the Start of Spring, which falls on Sunday. [Photo by Wang Zhuangfei/chinadaily.com.cn]

Children "whip" the figure of an ox with a wicker stick at the Ancient Observatory in Beijing, Feb 4, 2018. [Photo by Wang Zhuangfei/chinadaily.com.cn]

Children are surrounded by brightly colored pinwheels at the Ancient Observatory in Beijing, Feb 4, 2018. [Photo by Wang Zhuangfei/chinadaily.com.cn]

Children wearing festive red coats play with colorful pinwheels at the Ancient Observatory in Beijing, Feb 4, 2018. [Photo by Wang Zhuangfei/chinadaily.com.cn]

Children play with pinwheels to mark the Start of Spring at the Ancient Observatory in Beijing, Feb 4, 2018. [Photo by Wang Zhuangfei/chinadaily.com.cn]