Mr Zhang Yafei, Deputy General Manager of the China Post Group(third right); Mr Xu Anliang, Deputy Secretary General of Shenzhen Municipal People's Government (fifth right); Mr Tam Wing-pong, Postmaster General of Hongkong Post(first right) and the head of the Guangdong Post Company (second left) and five children, who were born in 1997, officiate at the "China - Hong Kong Joint Issue on the 10th Anniversary of the Reunification of Hong Kong with China" Special Stamps Issuing Ceremony.