What does the paper crane stand for? !

Paper cranes, like Fuxing, originated in Japan and were used by the Japanese to commemorate the dead. Paper cranes commemorating the dead are usually folded by relatives and friends.

China's ignorant pro-Japanese faction thought that paper cranes represented courtship or other ambiguous meanings, but in ancient Japan they were used to commemorate the dead! It is the same as the paper figures, paper horses and paper money burned at traditional funerals in China.