Linguistic stimulation is needed to develop a child's language skills. At this time, onomatopoeia and onomatae are very effective. The onomatopoeia that infants who start learning to speak often use is gathered! ▶ Drawing, sound, and letters! It stimulates your five senses and you enjoy learning it.~ ▶ Let's listen to realistic sounds together~ ▶ Curiosity and imagination! If you press the scene from a fairy tale, it moves. Hangul Nori, an onomatopoeia that helps develop brain and creativity. The child sees, listens, and follows. Please teach your child Hangul pleasantly through onomatopoeia. ○ HeyHo develops educational games for infants and children. - There are various educational games that develop develop development skills by growth stage. - Children learn topics easily and fun through games.