The original set of woodblocks was destroyed by fire during the Mongol invasions of Korea in 1232, when Goryeo's capital was moved to Ganghwa Island during nearly three decades of Mongol incursions, although scattered parts of its prints still remain. To once again implore divine assistance with combating the Mongol threat, King Gojong thereafter ordered the revision and re-creation of the Tripiṭaka; the carving began in 1237 and was completed in 12 years, with support from Choe U and his son Choe Hang, and involving monks from both the Seon and Gyo schools. This second version is usually what is meant by the Tripiṭaka Koreana. In 1398, it was moved to Haeinsa, where it has remained housed in four buildings.