Although records tell us that between 1937 and 1938, the Japanese Miyamoto Nobuhito did make four documentaries, as the fate of these is unknown, later people have not had the fortune of seeing them.
雖然根據文獻記載，在昭和十二、十三年間，日人宮本延人曾為他們拍過四支紀錄片，但下落不明，後人至今無緣一見。