Liu Qingxian, a music wizard with a wonderful sense of sound but no sense of the world, unexpectedly fell into an ancient dynasty that regarded music theory as metaphysics. Her ethereal singing voice can cause tuning forks to resonate, but she is regarded as a monster; she uses the Doppler effect principle to design a sound wave device to repel enemies, but she is ridiculed as a miraculous skill. In the face of drought, she deciphered geological codes from the ancient rhythm of chimes; in the face of post-war devastation, she used white noise to soothe the hearts of soldiers. From establishing the "Acoustic Engineering Bureau" to analyzing the sound spectrum using Fourier transform, Liu Qingxian used sound as a pen and temperament as a ruler. In the midst of doubts and wonders, he turned the cold acoustic principles into a recipe for governing the world that nourishes the people and harmonizes yin and yang, and composes a great song of mountains and rivers that integrates technology, art and benevolence.
