an echo

It's seen & NOT heard- It means they should not interfere in adult conversation.

The phrase "children should be seen and not heard" is an old English proverb dating back to the 15th century. It reflects a traditional belief that children should be quiet and respectful in the presence of adults. The phrase is often used to emphasize the importance of children showing proper manners and not interrupting adult conversations.

children.

because alot of adults in the uk still beleve in the old sayin "children should be seen & not heard