![Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)](http://www.ecns.cn/hd/2018/06/15/5fa3ee1500924f6abe73656f11e46e5c.jpg)
Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)
![A marmot climbs from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)](http://www.ecns.cn/hd/2018/06/15/ff7e8d1d4d7640f3a8c7cfa97b5ccb85.jpg)
A marmot climbs from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)
![Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)](http://www.ecns.cn/hd/2018/06/15/17698696170b4a2aa64758b904fe5c7e.jpg)
Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)
![Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)](http://www.ecns.cn/hd/2018/06/15/cc894bcbee7446d49c48c338056ce106.jpg)
Marmots climb from a cave on a grassland in Sunan County, Southwest China’s Gansu Province on a sunny day in mid-June 2018. (Photo: China News Service/Yin Tingjin)