Athough this extant book is incomplete nowdays, but since it collects all the rules and regulations of the Song Dynasty, So it is highly valuable historical material for us.

今存《庆元条法事类》是一残书，但由于所收条法均是在两宋实行过的法律，且是集庆元二年以前所有编敕大成的律书，因此具有很高的史料价值。

youdao

This is not the first time the academy has amended the rules in the best song category.

BBC: Oscars to have more original song nominees