Introduction to the Revolutionary Memorial Site: In July 1939, the Eighth Route Army Headquarters Arms Factory moved the Yushe Hanzhuang Armory to Huangyadong Shuiyao Mountain for expansion. Half a year later, it developed into an arms factory with more than 700 people, producing rifles, Bayonets, grenades, 50 guns and other types of weapons and ammunition, the annual production capacity can equip 16 regiments. That year, the Japanese army mobilized more than 5,000 troops and launched a massive attack on the Huangyadong Arsenal. The General Secret Service of the Eighth Route Army guarding the arsenal worked closely with the local militia. Under the command of Zuo Quan, deputy chief of staff of the Eighth Route Army, Ou Zhifu, leader of the secret service, and Guo Linxiang, political commissar, after eight days and nights of bloody fighting, they annihilated more than a thousand enemies and successfully defended the city. arsenal. Huangyadong Revolutionary Memorial Site is located in the west of Chiyu Village in Dongyadi Town, 45 kilometers north of Licheng.