Feature: Ancient, rare trees given new lease of life in China's Gansu
LANZHOU, Sept. 18 (Xinhua) -- Zhai Shuang'er rises early each day to visit his old friends -- the ancient and rare trees in the downtown area of Tianshui, a city in northwest China's Gansu Province.
He observes the growth of each tree by touching its trunk and checking the growth of the leaves, jotting the details in a notebook.
"The ancient trees are like living fossils of a city, recording the changes i