Make a pair and hope someone will make a bottom line. (Give me a lot of advice)

Morning paper, daily newspaper and evening paper are in chronological order. For one thing,

all of them can do Du or Dou solutions, so it can be understood as four kinds of registration, or three kinds. Finally, it is concluded. For another thing,

this is my humble opinion. I wonder if it is right.

As for how to give advice to me, I also hope that you can give me some advice.