Special Supplement: Center helps pandas propagate

Many overseas visitors come to Chengdu, capital of Sichuan province, not because of the sights of historical importance or scenic spots.

They just come to see giant pandas at the Chengdu Research Center, the only panda breeding center in the world within the borders of a metropolis.

With 67 pandas, it is the world's largest panda research institution, the largest artificial breeding center and repository of world's largest panda sperm bank.