Does anyone know... Earthquake or ??

[Dan. NY]

I was in Southern China a few weeks ago. Two nights in a row, there was an earthquake or something similar. Looking in the news, I saw North Korea had done Nuclear testing on the same day and a bit of local talk blamed this. The problem is.. I was roughly 1200 miles from this. A magnitude 4.5 should not travel 1000 + miles I dont think. It was also the wrong time. I felt these quakes at near 3-4 AM. News reported Nuc testing at noon local. Two nights in a row!!!! Nothing on the US earthquake maps for this time. Another week or so after, another earthquake happened locally and this one was recorded on the US maps.

I have experienced several smaller magnitude earthquakes before and this sure felt like the same thing. What did I experience??????