Xuan and his transporters

The second week Xuan at the school, we changed his transporter so that we can go home earlier. The arrangement has been so perfect that hubby and I feel it kind of hassle-free. Then Xuan began to ask if we could get back to the first transporter. I wasn’t sensitive enough as I thought Xuan, being a timid boy, doesn't like new stuff and he just got used to the Auntie Leong. One day, he came home and threw a tantrum just because of a petty thing that the father refused to fulfil. Xuan has a very calm temper, we immediately sensed something wrong with him. So the father sat him down, played and talked with him to find that he was punched and pinched by a boy in the van. It happened once. We will not know if the boy is a real bully or he was just playing with Xuan but being rough. But Xuan got angry with him and scolded him, stupid. Since we have been telling the kids that stupid is a nasty word, Xuan dared not to share the stories with us. The real issue is, right after he said stupid to the boy, the boy got unhappy and threatened him to tell his parents. So Xuan got scared and refused to go to school. Poor him. Now, he has become good friend with the boy and would show us where the transporter picks the boy.