Zhu Yu took the note and unfolded it in puzzlement, catching sight of the familiar musical notation. She looked at Lu Qing somewhat helplessly.
"Didn't you specially jot it down before to understand it?" Lu Qing said with a smile, "Give it a try."
Zhu Yu indeed felt previously that every time she wanted to know what was written on the secret messages, needing Lu Qing to "translate" for her was somewhat frustrating. So, she half-jokingly mentioned learning how to decrypt the ciphers herself to understand the content.
Unexpectedly, Lu Qing took it seriously and bought musical sheets back to teach Zhu Yu one by one, including some special notations not mentioned in the books.
This time, he deliberately left the secret message, presumably to give her a chance to practice after a few trials.
Zhu Yu attempted to read the content of the secret message; she remembered the musical notes and their meanings, but when it came to the actual secret message, her efficiency was not high.
