It is a prepaid postcard!
From the back of the card:
Lijiang is a rare exception of human and nature's harmonicus coexistence in today's world. Zermatt (Switserland), a small paradise highly developed while free from industrial pollution. In 2001, Yulong Snow Mountain of Lijiang and Matterhorn Switserland were designated as sister peaks. In 2005, Switseralnd Matterhorn Dreamland was founded at the foot of Yulong to honor the relationship, and to display the commonalities of coexisting approaches for humans and nature in the two places.