![](http://www.ecns.cn/hd/2023/05/09/84eb4842c0414e56b44c359be5113dd9.jpg)
Tibetans hunt down caterpillar fungus, known in China as "winter-worm summer-grass" on a mountain at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)
Gyaca County is a key site of yielding caterpillar fungus, an expensive ingredient in traditional Chinese medicine.
![](http://www.ecns.cn/hd/2023/05/09/63ec3fcdc82c4b238cedc9beb466a980.jpg)
Photo shows a newly-harvested caterpillar fungus at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/09/eaa7c8da0bdc4ef09f226abe21a12aae.jpg)
Photo shows a newly-harvested caterpillar fungus at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/09/3afa8e2655b4417aa21b2c653db412fc.jpg)
Tibetans trade caterpillar fungus at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/09/f43778b6effc4a51947308844b4c55e5.jpg)
Tibetans trade caterpillar fungus at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/09/d405a07740694f199f418e6d1161675c.jpg)
A villager applies homemade sunscreen to her face before collecting caterpillar fungus at Gyaca County of Shannan City, Southwest China's Tibet Autonomous Region, May 7, 2023. (Photo/China News Service)