In October 28th,I came to the park on the edge of the Yangtze River and erected a 5/8 wavelength vertical antenna.（The Yangtze River is the third largest river in the world). Fortunately, QRP and VP6D are connected successfully. Later I found that the actual output power was only 2.5 watts. Thanks to HA0NAR Laci's patience,

Interestingly, there was a group of tourists who didn't understand amateur radio activities.I think it was also a good propaganda.

I had a very pleasant experience. I recorded a video of this QSO: 

https://www.youtube.com/watch?v=1LQ1g0OrGVg&t=54s

Thank you for your great expedition
73  BA6QH/Ruan