Innocence: Innocence: refers to inner simplicity, without affectation and hypocrisy; Romance: frank and natural appearance. Describe children's simple, lively and lovely thoughts, without affectation or hypocrisy.
Full of vigor: full of vigor: a vigorous appearance. Describe a person or society full of vigor and vitality.
Childlike heart is not lost: lost: lost. Although old, I still have a naive heart. Describe the innocence of adults with children.
Lively: describe lively, vigorous and full of vitality.
Children's words are innocent: children are innocent and honest. If they say something bad, there is no need to get angry. It is also used to ridicule people for being childish and ridiculous.