A shop uses an X-ray scanner to test the authenticity of caterpillar fungi in Lhasa city, capital of Southwest China’s Tibet autonomous region, June 4, 2015. Known as "summer grass winter worm" by Chinese consumers, the parasitic fungus grows high on the Qinghai-Tibet Plateau and is highly valued for its purported medicinal benefits. It’s the peak season from mid May to late June. The price of caterpillar fungi fell compared with the same period last year. (Photo: China News Service/Li Lin)
