German Chancellor Angela Merkel smiles during a signing ceremony in Hefei on October 30, 2015. REUTERS/Johannes Eisele/Pool

German Chancellor Angela Merkel smiles during a signing ceremony in Hefei on October 30, 2015. REUTERS/Johannes Eisele/Pool

German Chancellor Angela Merkel smiles during a signing ceremony in Hefei on October 30, 2015. REUTERS/Johannes Eisele/Pool

June 10, 2016 12:20 PM (UTC+8)