Children learn paper crafts during the celebration of Halloween at the Tierpark in Berlin, Germany, on Oct. 31, 2013. (Xinhua/Zhang Fan)
A child wearing a costume takes part in the celebration of Halloween at the Tierpark in Berlin, Germany, on Oct. 31, 2013. (Xinhua/Zhang Fan)
A child wearing a costume takes part in the celebration of Halloween at the Tierpark in Berlin, Germany, on Oct. 31, 2013. (Xinhua/Zhang Fan)
A child wearing a costume takes part in the celebration of Halloween at the Tierpark in Berlin, Germany, on Oct. 31, 2013. (Xinhua/Zhang Fan)
Children wearing costumes take part in the celebration of Halloween at the Tierpark in Berlin, Germany, on Oct. 31, 2013. (Xinhua/Zhang Fan)
