77 people injured in blaze on commuter bus in southwest China.
Plans to build a waste incinerator in Guangzhou have ignited protests.
Armed police patrol vehicles deployed after three attacks at transport hubs.
Hundreds protested against China's role in a sea dispute.
Police fatally shot one person and captured another in the restive area.
Beijing's parking of oil rig in contested waters sparked row.
A third violent attack at a train station this year has spurred a crackdown.
Chinese fishing boat seized and crew detained in disputed waters.
Investors got a closer look at scale and growth of the Chinese e-commerce giant in an IPO prospectus.
Knifing in southern city of Guangzhou is second such attack in a week.
