Often avoided because it sounds like the word for "death". Personal Calculations:
: While the "Libro de Oro" is a contemporary title, it draws from the deep history of Chinese numerology, which dates back over 3,000 years. This includes legends like Fu Hsi receiving the He Tu (Yellow River Map) on the back of a mythical horse-dragon. libro de oro de la numerologia china pdf
: Regarded as a highly auspicious number, representing the number of days in a lunar cycle. Arrows of Strength & Weakness Often avoided because it sounds like the word for "death"