The sentence comes from Li Yu's poem in the Southern Dynasties, which originally refers to the pain of national subjugation. Now it has several meanings in making friends.

1. As far as I know, "I don't know" here is actually "knowledge".

I'm still willing to take care of my current happiness when I know it's only in my dream. I also feel that there is no good result with you, with a little sadness and a little self-blame.

2. I didn't know I was dreaming when I was dreaming. Now that I'm awake, we can get together and have a good break. However, there is still a half sentence behind me, so the first meaning is more likely.

So, come on, boy, give her more sense of security and visible prospects.

in addition; If you are a regular boyfriend and girlfriend, this means that she is not suitable for you, please let her go.

If you are an ordinary friend, this is a bit ambiguous, and you can continue to communicate.

If you are not proper relationship, this means that she regrets, worries and wakes up ~ Do you understand that I wish you well anyway-I beg for points.