We thought this was just another flower until we looked it up, and found this online:  “Rhodiola rosea is a Traditional Chinese Medicine and Scandinavian herb touted to promote physical/cognitive vitality. … In regards to fatigue, rhodiola appears to be able to significantly reduce the effects of prolonged and minor physical exhaustion.”  We suppose, being here in Hong Kong, we should have known that.  Unused card G528 from Post Greenland.  Grade: 1