This is my original post. I think it's too much to read. Here's the short version.

1. Go to this video by Bloomberg: https://www.youtube.com/watch?v=j1nfhDqZkk0
2. Skip to 1:37:15 and hit play
3. https://ibb.co/s9Ff0Z6
4. Who is SF-Express? https://www.sf-express.com/us/en/about_us/about_sf/company_introduction/
5. According to this article, SF-Express says they are not operating domestically in the US right now: https://www.globaltimes.cn/content/1205916.shtml

In response, SF Express told media on Thursday that it currently doesn't provide service domestically in the US.

6. Why are official US ballots being transported by a Chinese shipping company?

The President wrote an executive order for this occasion.

https://www.whitehouse.gov/presidential-actions/executive-order-imposing-certain-sanctions-event-foreign-interference-united-states-election/