During the Korean War Hoeryong was severely bombed by several air strikes:
K-35 Hoeryong Airdrome (Kainsei) (North Korea) -- The target of one of Task Force 77’s largest strikes on seven areas during July 1953. An online history site from the Navy provides these entries about this airfield in their Korean War Chronology.
13 September 1952: Two carrier strikes from TF 77 attacked large supply and troop billeting areas in the Manchurian border town of Hoeryong.
17 November 1952: Two days operations from three carriers centered about maximum effort strikes on Chongjin, Kilchu and Hoeryong.
18 November 1952: Air strikes were conducted against Hoeryong