Abacus lesson by Japanese in Zhenjiang, Jiangsu, China.
<a href="//commons.wikimedia.org/wiki/User:Sweeper_tamonten" title="User:Sweeper tamonten">Sweeper tamonten</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Sweeper_tamonten" title="User talk:Sweeper tamonten"><span class="signature-talk">talk</span></a>)
Taken on 20 January 1938
Japanese photograph magazine "Sino-Japanese war photograph news #12" (Asahi Shimbun, published on February 25, 1938)