The study identifies a ceftriaxone-resistant Neisseria gonorrhoeae strain FC428 in China, which is genetically identical to the Japanese strain and shows resistance to multiple antibiotics including ceftriaxone, cefixime, tetracycline, and ciprofloxacin. Key resistance mechanisms include the mosaic penA 60.001 allele, mtrR promoter deletion, and mutations in PorB, PonA, GyrA, and ParC.