Did you know that Eevee's evolutions in the Chinese translation have Eevee names? For example, Espeon's name is "Sun Eevee", Umbreon's name is "Moon Eevee", Flareon is "Fire Eevee", Vaporeon is "Water Eevee", Sylveon is "Fairy Eevee", etc. So all of their cries in Chinese are syncronized to "Yi bui~ Yi bui~"