Charon is a celestial body in the solar system. In a tide-locked state, it and Pluto gradually becoming synchronous rotation from different orbits and rotation rates due to the influence of tidal forces over a period of time. This work combines different sounds of Chinese instrument, Western instrument and Samples. Their process from struggle to integration is a metaphor that Charon is gradually affected by tidal forces. Technology in this work has created interaction among acoustic instruments, samples and sound effects. The connection among them develops the work. I believe that the tension and interaction are the fascination of the combination of sounds.