What is "jangchang"

The Jangchang, literally long spear, is a Korean weapon first described in the martial manual Muyejebo from the 16th century. The weapon was preferably made from the yew tree, but other wood could be used as well, like wood from the oaktree and chestnut.

The length of the spear was about four meters. Because of its length the weapon wasn't used to throw with.