Tsang Chi-leung had failed to hand in his homework on Chinese Language twice in two days when his deputy headmaster gave him two strokes of the cane. The teacher, Wong Tin-kau, was conditionally discharged yesterday for 18 months for assault. After the caning, the 10-year-old boy went to a private tutorial school for more lessons until dinner hour. He did not cry about the caning, but the marks on his buttocks alarmed his mother who reported the case to the Against Child Abuse Association. The boy was then taken for a medical examination. Two cane marks were found on each side of each buttock. Wong, 46, of Cheung Wong Wai Primary School, made his first statement the next day on September 27. On September 25, the boy did not hand in his Chinese exercise and was asked to see his subject teacher in the teachers' office. The school had given the boy frequent warnings about not doing his homework. Teachers had also interviewed the boy's father. The next day, however, Wong saw the boy standing outside the teacher's office again in the recess break. He discovered Chi-leung had failed to hand in his Chinese homework. The deputy headmaster then took a bamboo cane and beat the boy twice on the buttocks. Wong said he had apologised to both the mother and the boy when the case was taken to the police the next day, but the apology was not accepted. On December 1, Wong was arrested for assaulting the 10-year-old and charged at Sha Tin Court five days later. The court heard yesterday that Wong had lost 6.82 kilograms in weight because of the legal proceedings.