Assertion: surviving firearm | /r/HasProperty | discovered at site
Facets:
value: in modern-day acheng district
type: LOCATION
Source sentences:
text: The oldest surviving firearm is the Heilongjiang hand cannon dated to 1288, which was discovered at a site in modern-day Acheng District where the History of Yuan records that battles were fought at that time; Li Ting, a military commander of Jurchen descent, led footsoldiers armed with guns in battle to suppress the rebellion of the Christian Mongol Prince Nayan.