Can I change the tune when playing guzheng in the middle of the night?

Playing guzheng in the late-night art test can be changed. All five 1 in the D key are reduced by two degrees to become 7, which is the A key. All four 1 in a key are lowered by two degrees to become 7, that is, e key. Compared with the songs written by some professional composers, the modern playing skills and traditional folk flavor of Late Night are particularly valuable. This work is a song of the same name adapted from traditional Peking Opera music, which is adapted from the famous Peking Opera song "Deep Night", and it can also be said to be a typical contemporary Zheng music work.