Medical staff from the local Tibetan hospital collect herbs in Xiahe County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, July 29, 2020. Xiahe, a county rich in herb resources, enters its herbs collection season every year from mid-June to late July.Photo:Xinhua

Medical staff from the local Tibetan hospital collect herbs in Xiahe County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, July 29, 2020. Xiahe, a county rich in herb resources, enters its herbs collection season every year from mid-June to late July.Photo:Xinhua

Medical staff from the local Tibetan hospital collect herbs in Xiahe County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, July 29, 2020. Xiahe, a county rich in herb resources, enters its herbs collection season every year from mid-June to late July.Photo:Xinhua

Medical staff from the local Tibetan hospital collect herbs in Xiahe County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, July 29, 2020. Xiahe, a county rich in herb resources, enters its herbs collection season every year from mid-June to late July.Photo:Xinhua