A staff member introduces a smart farming and planting system during the preview of Jiangxi International Mobile Internet of Things Expo 2019 in Huaquan Village of Yingtan City, east China's Jiangxi Province, July 17, 2019. Jiangxi International Mobile Internet of Things Expo 2019 is held here on July 18. (Xinhua/Zhou Mi)

A staff member introduces a smart greenhouse during the preview of Jiangxi International Mobile Internet of Things Expo 2019 in Huaquan Village of Yingtan City, east China's Jiangxi Province, July 17, 2019. Jiangxi International Mobile Internet of Things Expo 2019 is held here on July 18. (Xinhua/Zhou Mi)

A model of smart pig breeding system is displayed during the preview of Jiangxi International Mobile Internet of Things Expo 2019 in Huaquan Village of Yingtan City, east China's Jiangxi Province, July 17, 2019. Jiangxi International Mobile Internet of Things Expo 2019 is held here on July 18. (Xinhua/Zhou Mi)

A smart water meter is displayed during the preview of Jiangxi International Mobile Internet of Things Expo 2019 in Huaquan Village of Yingtan City, east China's Jiangxi Province, July 17, 2019. Jiangxi International Mobile Internet of Things Expo 2019 is held here on July 18. (Xinhua/Zhou Mi)