![](http://www.ecns.cn/hd/2021/05/28/ccb7fc9624c8481b84b320771f5fb865.jpg)
An exhibitor shows a drone for forest fire alert and monitoring during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province, May 27, 2021. (Xinhua/Peng Zhaozhi)
![](http://www.ecns.cn/hd/2021/05/28/f51c15d83a0e40f0be6c9bd984c7e968.jpg)
Photo taken on May 27, 2021 shows a drone for forest fire alert and monitoring during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province. (Xinhua/Peng Zhaozhi)
![](http://www.ecns.cn/hd/2021/05/28/ebb1657c15214c5985047d45ceff8f99.jpg)
Photo taken on May 27, 2021 shows a portable mobile emergency monitoring station based on the BeiDou Navigation Satellite System during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province. (Xinhua/Peng Zhaozhi)
![](http://www.ecns.cn/hd/2021/05/28/eabfc4ae92544ff794e165da443d3a10.jpg)
Visitors look at an unmanned boat during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province, May 27, 2021. (Xinhua/Peng Zhaozhi)
![](http://www.ecns.cn/hd/2021/05/28/3fb987cf5f584a9e903d84b6ca51f0aa.jpg)
Photo taken on May 27, 2021 shows an anti-jamming chip during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province. (Xinhua/Peng Zhaozhi)
![](http://www.ecns.cn/hd/2021/05/28/87183af6bd3f43efa5c765f7bbab1374.jpg)
Photo taken on May 27, 2021 shows an intelligent unmanned sanitation vehicle during the 12th China Satellite Navigation Expo (CSNE) in Nanchang, capital of east China's Jiangxi Province. (Xinhua/Peng Zhaozhi)