How to find out if children have seen yellow?

What you did was wrong. If the children haven't seen it, parents will suspect that it will worsen the relationship. If so, what should I do? Face to face, is that good? Excuse me. What should you do if you don't expose it?

It's time to change your mind. What you ban now, can you ban it in the future? As parents, we should trust our children first, and then guide them well, instead of using these unnecessary means.

By the way, if it's me, if I read it, I can guarantee that it won't leave any traces, and no one will find it.