A tutor and diagnosed paedophile who admitted to sex acts at his Tin Shui Wai home with a 13-year-old he met online was jailed for 3 1/2 years. Lam Chi-yung, 35, had pleaded guilty to buggery and indecent conduct with a child. The incidents occurred in January. The boy told a social worker. The court heard Lam sought psychological counselling and stopped teaching at primary schools.