On the afternoon of September 14, 2015, the unveiling ceremony of commemorative envelopes marking the 65th anniversary of establishment of China-Switzerland and China-Liechtenstein diplomatic relations was held grandly in Olive Hall of the Foreign Ministry. Director-General of the Department of European Affairs of the Foreign Ministry Liu Haixing and Swiss Ambassador to China Jean-Jacques de Dardel inaugurated the issue of the commemorative envelopes and signed on the first-day cover. After the event, Director-General Liu Haixing and Ambassador Jean-Jacques de Dardel presented the guests with the commemorative envelopes as gifts.