Major progress (2)

"As for the number 0, we'll deal with it according to the extended beat symbol for now!" Xia ruofei said,"the next question is these negative numbers. From 7 to 1, what do they represent?"

"I think ... It's probably the tone!" Song Wei said. 1 corresponds to 1,2 corresponds to 2, and so on. However, I don't know if the pitch of a negative number is higher or lower than a positive number, and how many degrees different they are ..."

Xia ruofei thought for a moment and said,""We can try this bit by bit. After all, there are only a few possibilities."

"I think Song Wei's answer is closer to the correct one!" Chen Xuan said. After we return to the capital, we'll follow this guess. First, we'll convert the song into a simplified score, and then list out all the versions. When the time comes, we'll be able to distinguish which one is correct after listening to it!"