Childhood is not a good description of children.
Children are usually adults. The word "childlike" is generally used to describe adults who are still young and energetic even after they have grown up and are facing a stressful society and may be busy every day.
They have the same characteristics as a child, they are curious, they are friendly to the world, they have fun and so on. They may still like to read manga, like watching anime, like fashionable things, like chasing after novelties, and can get along well with people younger than themselves.
Childhood can also be said to be a good state of mind, a good way of life, the body is old and the heart is not old, to become such a person should live a very comfortable life.
"The meaning of the phrase "all things sweet" is that a person's heart is very simple, and the things he sees and gets along with others are very beautiful. It is important to continue to mature in thought, while maintaining a childlike heart in life and always embracing life with enthusiasm. A virgin's heart has not yet been extinguished, describing a person who is old but still has an innocent heart.
Describes an adult who still has the innocence of a child. Even if you inevitably become mature on the outside, you still need to retain a child's corner of your heart. If you live with such a mindset, you can see that everything is beautiful. This is a beautiful wish. Even if you have experienced infinite trials and tribulations, and have seen all kinds of people, you will still hold a childlike innocence, so that life is all sweet.