KUNMING, Dec. 13 (Xinhua) -- In the China-Myanmar border county of Menglian, nestled in southwest China's Yunnan Province, waves of avocado trees adorn the scenery, with their green fruits swaying gently in the wind.
Shen Weiguo, a former entrepreneur, carefully gathers these fruits and places them in his basket. "I was once involved in various enterprises, but later I observed the burgeoning growth of the avoca
