A worker walks past oil pipes at a refinery in Wuhan, Hubei province March 23, 2012. REUTERS/Stringer/File Photo

A worker walks past oil pipes at a refinery in Wuhan, Hubei province March 23, 2012. REUTERS/Stringer/File Photo

A worker walks past oil pipes at a refinery in Wuhan, Hubei province March 23, 2012. REUTERS/Stringer/File Photo

June 10, 2016 7:09 AM (UTC+8)