Beijing, August 27 (Youth.cn) - Photo taken in an ecological crab farm in Suqian, Jiangsu Province. Crab farmers were feeding their crabs and adding oxygen while purifying pool water. The crabs is about to enter market around Mid-Autumn Festival. Crab farmers seize time to improve the crabs’ living environment through cleansing the water and assuring the provender’s nutrition. In doing so, the stable and high production is promising. Photo/VCG