The "Contest To Cut Down 100 People" by <a href="https://en.wikipedia.org/wiki/Tsuyoshi_Noda" class="extiw" title="en:Tsuyoshi Noda">Tsuyoshi Noda</a> and <a href="https://en.wikipedia.org/wiki/Toshiaki_Mukai" class="extiw" title="en:Toshiaki Mukai">Toshiaki Mukai</a>. The article was written by Kazuo Asaumi and Jiro Suzuki at the foot of the <a href="https://en.wikipedia.org/wiki/Purple_Mountain" class="extiw" title="en:Purple Mountain">Purple Mountain</a>, the photograph was taken by Shinju Sato in <a href="https://en.wikipedia.org/wiki/Changzhou" class="extiw" title="en:Changzhou">Changzhou</a> in 12 December 1937.
Shinju Sato (佐藤振壽)
1937-12-12
Tokyo Nichinichi Shimbun, 13 December 1937