The Qingdongling tombs are covered in snow in Zunhua, Hebei province, over the weekend. (Photo by Xu Heqi/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Zhai Xiaoyong/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Zhai Xiaoyong/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Zhang Junsheng/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Zhai Xiaoyong/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Zhai Xiaoyong/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Wang Jian/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Xu Heqi/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Wang Jian/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Xu Heqi/for chinadaily.com.cn)

The Qingdongling tombs are covered in snow in Zunhua, Tangshan, Hebei province, over the weekend. (Photo by Xu Heqi/for chinadaily.com.cn)