The Great Wall in the Ningxia Hui autonomous region shrouded in cloud.[Photo by Lu Youtan/chinadaily.com.cn]

With the January publication of a plan to preserve the Great Wall, a decade-long photography project by a researcher from China's Ningxia Hui autonomous region has gained national attention.

Li Peng, a researcher with the Cultural Relics Bureau, started to photograph the Great Wall in his northwest China home region in 2007 while riding his motorbike.