YAYA'S favorite japan fumikiri crossing signal

FUMIKIRI CROSSING SIGNAL ordered. On the manual it is indicated that it is for 15 years old.
He very loves to watched FUMIKIRI TRAIN especially the sound it make . So his dad bought 6 set for him.
Since he is just 3years old i need to accompany him to build it. But luckily he can build it by looking in the manual. I just help him a little😅🥰