A knife-wielding man attacked primary school children in China's Hunan province, killing two students. Two persons were also injured in the attack.<br />''<br />''State-run China Daily reported, that the suspect has been arrested.<br />''<br />''<span style="color: #222222;">There has been a series of knife and axe attacks in China in recent years, many targeting children. Such attacks are often blamed on people with mental illness or who have personal grievances. </span><br />