Idioms that express helplessness and have nothing to say.

Nothing to say-nothing to say, nothing to interrupt; Unspeakable-unable to describe (inner feelings) in words; Silent look in the eye (look around silently)-look in the eye (look left and right), there is nothing to express, and it is unspeakable to describe sadness to the extreme; (Su Shi Jiang Chengzi

It's hard to say-it's hard to say, indicating pressure or hiding something. Silent SOB-speechless, a thousand words solidified, stuck in the throat, sobbing silently. Want to cry without tears; (Liu Yongyu Lingling) I was shocked and speechless-suddenly I was shocked and didn't know what to say. I don't know whether to express this type of silence. If you want to show disdain for telling others, you can use something like "Summer insects talk about ice".