９９１年

• Traditional Chinese Character(HanT): ９９１年
• Simplified Chinese Character(HanS): ９９１年
• Bopomofo(Mandarin Phonetic Symbols): ㄐㄧㄡˇ ㄐㄧㄡˇ ㄧ ㄋㄧㄢˊ (ㄐㄐㄧㄋ)
• Bopomofo(Zhuyin Keyboard Input/IME): "ru.3ru.3u su06" (ru.3ru.3usu06)
• 「９９１年」的漢語拼音: Jiu3 Jiu3 Yi1 Nian2
• (ASCII) Hanyu Pinyin: "jiujiuyinian" "Jiu3Jiu3Yi1Nian2" "Jiu3 Jiu3 Yi1 Nian2" (JJYN)
• (Latin) Hànyǔ Pīnyīn: JiǔJiǔYī [ Jiǔ Jiǔ Yī ]
• (英文翻譯) English Translation: "991"
• (西語翻譯) Traducción Español: "991"
• (日文翻譯) 日本語翻訳: "991"