Training, Begin!! (修業、始め!!, Shugyō, Hajime!!) is chapter 316 of the Naruto manga.
Kakashi and Yamato explain the different nature transformations to Naruto and how his nature, wind release, has the greatest offensive capabilities. In order to master wind, Naruto and hundreds of shadow clones must learn how to slice leaves with chakra, something they slowly begin to progress with. Meanwhile, Asuma plays shōgi with Shikamaru and they begin relating the various pieces to positions within Konoha. After Asuma makes an uncharacteristic move, sacrificing a knight to protect the king, Shikamaru suggests that the knight represents ninja like them while the king represent the Hokage. Asuma tells him that he has the identity of the king wrong, but that he'll learn someday.