If the Book of Changes has changed, should it be interpreted according to the original or the change?

Six hexagrams remain unchanged, and the word is broken by this; A stubborn change, use this stubborn change to drop the word; There are two changes, which are broken by the two words of this hexagram, but the above is the main one; Three changes, changing with the original; This hexagram is chastity (body) and changed to regret (use); Four changes, two unchanged, but the following is the main; Five changes, unchanged mentality; Six ideas are changed, and the two ideas of Gan Kun are broken with the word "use".