Original: The Chinese word for four (, pinyin: sÃ, jyutping: sei3), sounds quite similar to the word for death (, pinyin: sÇ, jyutping: sei2), in many varieties of Chinese.
Simplified: The Chinese word for four (, pinyin: sÃ, jyutping: sei3), sounds very similar to the word for death (, pinyin: sÇ, jyutping: sei2).