What do you mean, it's hard to level?

I can't let go, I can't let go, I feel unwilling. I won't forget but I won't respond.

This means that after Baoyu married Baochai, he still can't forget Lin's sister Daiyu.

Here, I feel it is difficult for me to express my regret and sadness for people or things that have been lost and can no longer be owned. Or maybe the feelings or things that should belong to them have taken an unexpected turn, and it is difficult to balance in my heart after losing them, leaving me only regret, regret and indignation.

Generally speaking, you are suffering from some sadness that should not happen to you.