[8][9][10] On 2 October 1920, the Independence Army raided Hun-ch'un and killed 13 Japanese including the commissioner of the consulate police.

From 21 to 23 October, the Northern military administration office army (Korean: 북로군정서군; Hanja: 北路軍政署軍) led by Kim Jwa-jin lured some of Japanese soldiers and attacked them in Baiyunping (白雲坪), Quanshuiping (泉水坪) and Wanlougou (完樓溝).

The Korean troops had the Japanese Azuma Detachment at a disadvantage, and the two forces fought the final battle in the Yulang town (漁郎村).

The Korean army claimed to have killed 1,200 Japanese soldiers, and wounded thousands of others on 26 October, though the number of casualties during the battle is still debated on.

In response to these claims, Kim Hak-Cheor (also known as Song Jin-woo), who participated in many battles as a member of the armed group for the independence of Korea, argued that the number of Japanese casualties was exaggerated by a factor of 300 or more.

[17] For the casualties of the Japanese army, Hanguk Doknip Undongji Hyulsa (韓國獨立運動之血史）by Bak Inseok (1920) states "900-1,600 including Regimental Commander Kanō," Daehan Minguk jeongdangsa compiled by the National Election Commission (1964) "over 1,000," Hanguk jeonjaengsa by the Military History Compilation Committee of the Ministry of National Defense (1967) "3,300 dead and wounded," and Hanguk Minjok Undongsa by Jo Jihun (1975) "3,300 including Regimental Commander Kanō."

According to Kim Hak-Cheor, who participated in many battles as a member of the armed group for the independence of Korea, the number of Japanese casualties that Koreans claimed was exaggerated more than 300 times.