1。 There are too many people.
2. It's too hot
It will cost too much money.
4。 There is a long queue at every meeting place.
5。 Because of the queue, I can't see a few venues a day.
6. I saw some photo exhibitions and slide exhibitions.
Several high-end exhibits are placed far away, and the details are completely unclear.
7. It's basically a cursory look, and it's meaningless to forget it after reading it.