You should say:
What did this advertising promote?
Where did you see this?
What was the content of it?
Why do you think it is impressive?
高分语料：Unlike a normal running shoe each toe was separate. It was really strange to see something like that because I had just been wondering a few weeks earlier why someone hadn't invented a running shoe like this before—and then a couple of weeks later by pure coincidence I came across them on the internet. I wasn't even looking for them or anything.