These are special.  The set of four different unused cards (we only show one here, through the plastic wrap they are provided in) comes directly from the counter in this, Hong Kong Island’s oldest Taoist temple, dating from 1847.   If you buy these, you are contributing to the Tung Wah Group of Hospitals that administers the temple.  And if you come to Hong Kong, this temple is a must-see.  Grades: 1