This is a silhouette of a Japanese military uniform in World War II, but I wonder why this Japanese devil wears headphones on his face.

This is a long story. In fact, the man in this photo is Yamada Eagle, who made outstanding contributions as a signal soldier on the battlefield during World War II. In recognition of him, the Emperor took out the product of the highest communication technology at that time, which was Sony's first generation headphones. This earphone was made by Masaru Ibuka's father, and it is an epoch-making communication device. This earphone is a test model and is intended to be put into military use in the future. However, before this plan was implemented, Japan had already surrendered. Hideki Yamada later surrendered and became a prisoner of war. He didn't go back to Japan, so he stayed in China. Gradually, no one knew that he was Japanese. Until his death, he absolutely told his son that this earphone must be inherited. Now it has been inherited by a Changchun man named Sun.