As one of three exascale prototypes for the 13th Five-Year Plan, Sugon exascale prototype uses heterogeneous computing architecture. In the prototype, CPUs are the domestically-produced Hygon x86 processors authorized by AMD, and accelerators are Hygon DCUs (Deep Computing Units). In addition to testing the chips with benchmarks, in order to study the performance of real applications on this prototype, we port a Particle-In-Cell application called Gyrokinetic Toroidal Code at Princeton (GTC-P). We compare the performance and scalability of GTC-P on Hygon CPU and DCU with Intel 6148 CPU and NVIDIA V100 GPU. Our evaluation show the performance of real HPC application on Sugon exascale prototype.