The spelling of the name "Kailei" can be explained using IPA phonetic transcription. The first sound, "k," is a voiceless velar plosive. The second sound, "ai," is a diphthong that starts with an open front unrounded vowel and transitions to a close front unrounded vowel. The third sound, "l," is an alveolar lateral approximant. The fourth sound, "ei," is another diphthong that starts with an open back unrounded vowel and transitions to a close front unrounded vowel. The final sound, "i," is a close front unrounded vowel.