There is nothing to say a balloon needs to be launched from China to be Chinese. They could be launched from a boat of any size, or brought into another country and launched there.
Absolutely; I am just dealing with the present media information, where they say that the balloons are coming from. I was really perplexed by that balloon shot down over Lake Huron; how did it get to that location without detection? It turns out that it was likely a domestic balloon launched by a balloon club.