The killing allegedly arose over an argument over homework.
The Shanghai Daily said reports indicated the suspect allegedly beat the little boy unconscious and then buried him alive after a running series of daily squabbles culminated in a deadly argument over the child's failure to do his homework.
The newspaper, which cited a report on the Web site Yunnan.cn, said the suspect then allegedly ordered his other three kids not to tell anyone about what had happened. The children were placed with their grandparents and will be provided with psychological counseling.
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