![Visitors look at a model of the oceanic research vessel Tansuo-1, mother ship for manned submersible Shenhai Yongshi, at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/05062bd4e35b465a94b4a11d1836000c.jpg)
Visitors look at a model of the oceanic research vessel Tansuo-1, mother ship for manned submersible Shenhai Yongshi, at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A visitor looks at a model of the Haiyan underwater glider at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/cbb9efb2afc84509856799e4fc84b31a.jpg)
A visitor looks at a model of the Haiyan underwater glider at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/ad26fe6a41d04f4db480b1ebb262dd14.jpg)
A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/4fb8cfa8586a434f9b365221c1046c12.jpg)
A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/55b4c5228851487ca07facd5741f8efc.jpg)
A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![Visitors use VR to try out the manned submersible Shenhai Yongshi at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/f66fe1c0a0904f3086b884a4aebac867.jpg)
Visitors use VR to try out the manned submersible Shenhai Yongshi at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/7abdf83c65d64ef0b7b3ff02802088be.jpg)
A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)
![A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)](http://www.ecns.cn/hd/2018/06/22/5e037061cfbf49acb51a248565ce15b7.jpg)
A vehicle on display at the 9th International Military and Civilian Dual-use Technology Exhibition in Chongqing, June 21, 2018. (Photo: China News Service/Zhou Yi)