A man in China\'s Yunnan province has been detained for allegedly beating his son and burying him alive over daily quibbles, a media report said. The suspect, surnamed Li, killed his six-year-old son for not doing his homework, reported Shanghai Daily citing a Yunnan.cn report. Li kicked his son in the chest and threw him against the wall. When the boy did not get up, the father hit him on the head with a rock and the boy passed out, the website reported. He then buried the son on a hill instead of taking him to any hospital. Li\'s three other children witnessed the violence but they were threatened against telling anyone about the incident.