Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

A bee collects honey among flowers at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province, Nov. 28, 2019. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 28, 2019 shows the scenery at the Heishijing scenic spot in Shilin Yi Autonomous County, southwest China's Yunnan Province. With about one thousand kinds of Chinese medicines growing among the rocks, the Heishijing scenic spot attracts many visitors with its special landscape. (Xinhua/Zhang Ailin)