'Mother of the graves' devotes her life to army of fallen heroes

For four decades, Xu Zhaoying carried out a mission of compassion. At a sprightly 84, she insisted on climbing the hills behind her house to tend to the graves of martyrs of the Red Army in Xing'an county of Guilin in South China's Guangxi Zhuang autonomous region.

Geographically isolated from urban areas, You'an village, Xu's hometown, can only be reached after a two-hour drive deep into the mountain.

With few neighbors and little arable land to farm, she lived a humble life but refused to move although her son asked her to many times.