《宋书·志·卷十四》
元嘉二十年，太祖准备亲耕籍田，因这种仪式长久被废止，便指示何承天拟定仪式。
元嘉二十年，太祖将亲耕，以其久废，使何承天撰定仪注。
In the 20th year of Yuanjia, Taizu prepared to cultivate the land by himself, and because this ceremony had been abolished for a long time, he instructed He Chengtian to formulate the ceremony.
<s>[INST] Kindly elucidate the central themes in this passage in English: 元嘉二十年，太祖将亲耕，以其久废，使何承天撰定仪注。 [/INST] In the 20th year of Yuanjia, Taizu prepared to cultivate the land by himself, and because this ceremony had been abolished for a long time, he instructed He Chengtian to formulate the ceremony.</s>
Kindly elucidate the central themes in this passage in English: 元嘉二十年，太祖将亲耕，以其久废，使何承天撰定仪注。
user
In the 20th year of Yuanjia, Taizu prepared to cultivate the land by himself, and because this ceremony had been abolished for a long time, he instructed He Chengtian to formulate the ceremony.
assistant