According to news reports, this evening ten men (identities not yet known) armed with knives carried out an attack at the Kunming railway station which left at least 33 people dead and well over a 100 wounded. Four of the terrorists were shot dead and one was captured, with the other five still at large.The Chinese government is blaming the attack on Uyghur separatists, though that's the standard response for any unexplained attack in China so we'll have to wait and see what details emerge.
Either way it's a sad event and illustrates the carnage that can be unleashed on an unarmed and unaware crowd of people even with comparatively unsophisticated weapons and techniques.
Source articles: Reuters, BBC