《宋书·志·卷二十七》
然后改用新的历法，变更朝廷服色，改用新的国号，天下便感到十分幸运。 
然后改正朔，易服色，正大号，天下幸甚。 
Then change to a new calendar, change the color of the court dress, and change the new name of the country, and the world will feel very lucky.
<s>[INST] For each of the following sets of Classical Chinese and Modern Chinese sentences, provide an English translation that captures the essence of both: Classical: 然后改正朔，易服色，正大号，天下幸甚。  Modern: 然后改用新的历法，变更朝廷服色，改用新的国号，天下便感到十分幸运。  [/INST] Then change to a new calendar, change the color of the court dress, and change the new name of the country, and the world will feel very lucky.</s>
For each of the following sets of Classical Chinese and Modern Chinese sentences, provide an English translation that captures the essence of both: Classical: 然后改正朔，易服色，正大号，天下幸甚。  Modern: 然后改用新的历法，变更朝廷服色，改用新的国号，天下便感到十分幸运。
user
Then change to a new calendar, change the color of the court dress, and change the new name of the country, and the world will feel very lucky.
assistant