C115 What do you mean by that

When Qin Lianshuang arrived at the palace, Prince Nanzhao was standing in front of the window playing his flute in a peculiar manner.

The flute melody was gentle and elegant, yet it also carried a tinge of sadness. It merged with the winter night, causing one's heart to become inexplicably heavy.

"Crown Prince Nan Zhao is really interested." Qin Lianshuang spoke to the crown prince