在这个绘本中，小猪通过接触到朋友们的各种“开开心心的标志”，回想起自己的“开开心心的标志”，从而恢复了精神，重新振作起来。不仅大人有时候会没精神，孩子们也会。如果大家能一边读着这本绘本，发现彼此的“开开心心的标志”，一边朝气蓬勃、高高兴兴地玩就好了。大家都有“开开心心的标志”！没精神的时候，想一想“开开心心的标志”吧！

In this picture book, Piggie regained his spirits and re-energized by getting in touch with various "happy signs" of his friends and recalling his own "happy signs". Not only do the grown-ups sometimes lose energy, but also children. If everyone can read this picture book and discover each other's "signs of being happy", it would be nice to play vigorously and happily at the same time. Everyone has a "happy sign"! When you are not energetic, think about the "Happy Sign"!