He wounded 22, but there were no fatalities.
This happened in China, where, due to the lack of readily available guns, he had to use a knife.
I am not making this up. Google it.
Also note, you almost never read about drive-by knifings, or innocents getting caught in the cross-stabbing.
Yes, people kill people. Guns simply make it a whole lot quicker, easier, more efficient and indiscriminate.
It's why we don't go to war wielding swords.