![A special launching ceremony of the stamp commemorating the DPRK-USA summit is held in Hanoi, Vietnam, Feb. 26, 2019. (Xinhua/Wang Shen)](http://www.ecns.cn/hd/2019/02/27/7cc2d1a919024440ae06863152a136d8.jpg)
A special launching ceremony of the stamp commemorating the DPRK-USA summit is held in Hanoi, Vietnam, Feb. 26, 2019. (Xinhua/Wang Shen)
![A special launching ceremony of the stamp commemorating the DPRK-USA summit is held in Hanoi, Vietnam, Feb. 26, 2019. (Xinhua/Wang Shen)](http://www.ecns.cn/hd/2019/02/27/27fb0f543e684d00b444f9efc57a45c6.jpg)
A special launching ceremony of the stamp commemorating the DPRK-USA summit is held in Hanoi, Vietnam, Feb. 26, 2019. (Xinhua/Wang Shen)