Laos - Traditional Arts and Ethnology Center, Luang Prabang

I got this postcard from my visit to the Traditional Arts and Ethnology Center in Luang Prabang. Went to the Luang Prabang Post Office and Vientian General Post Office to put a post office cancellation on the postcard. Mailed this postcard into a tourist mailbox in Patuxai Victory Tower in Vientiane with insufficient postage and still receive this postcard after a long delivery time.