Though the Shaolin Monastery Stele of 728 attests to these incidents in 610 and 621 when the monks engaged in combat, it does not allude to martial training in the monastery, or to any fighting technique in which its monks specialized. Nor do any other sources from the Tang, Song and Yuan periods allude to military training at the temple. According to Meir Shahar, this is explained by a confluence of the late Ming fashion for military encyclopedias and, more importantly, the conscription of civilian irregulars, including monks, as a result of Ming military decline in the 16th century.