Chinese lanterns , Poland ( 中國天燈 , 波蘭 )

Twinkle twinkle little Chinese lanterns: 8,000 flying candles released on shortest night of the year | Mail Online
http://www.dailymail.co.uk/news/article-2008104/Twinkle-twinkle-little-Chinese-lanterns-8-000-flying-candles-released-shortest-night-year.html