Peak experience helps in hunt for rare herbs

Working as a porter on Taishan Mountain during his early 20s left a lasting impression on respected "herb hunter" Zhang Yuqing.

"Once you do that job, you feel like you can succeed at anything," said Zhang, who spent about three years carrying goods up steep, winding passes during the late 1960s and '70s.

Today, at 69, he is better known in his native Shandong province for his tireless work in finding and cultivating rare herbs that grow on the mountain.