The French post office in Pak-Hoi operated from 1900 to 1904, in the southern coastal region of Guangxi. Though not a French colony, Pak-Hoi was influenced by nearby French Indochina and used for trade and missionary activity. French stamps overprinted "CHINE" were used, with postmarks showing varying spellings such as Pak-Hoi, Pakhoi, or Pak-Hay.