An exhibition to reveal a rarely known chapter in modern history about Koreans' armed struggles in China against Japanese aggression is being held until Sept 30 at the Museum of the War of Chinese People's Resistance against Japanese Aggression.

On show are more than 200 documents, maps, old photos and war-time relics to trace back a painful period in history.

Meanwhile, a China's War of Resistance against Japanese Aggression (1937-45) exhibition of vintage stamps, first-day covers, postcards and souvenir sheets is being held until Oct 9 at the museum.

The exhibition presents more than 1,000 items, including 140 old stamps donated by 83-year-old Zhang Yushan, a military officer of the 1950s.

8:30 am-5 pm, until Oct 9. Museum of the War of Chinese People's Resistance against Japanese Aggression, 101 Chengnei Street, Wanpingcheng, Fengtai district, Beijing. 010-8389-1485.