<The secret of 11,172 characters in the Hangul character field> is 19 (first sound) * 21 (center sound) = 399 (characters without support), 399 * 27 (last sound) = 10,773 characters, 399+10,773 (characters with support) = 11,172 means to sleep Hulbert (1892) said that Hangeul is a character with the broadest range of phonetic power. Jeong In-ji can cover requests well with the sound of the letters, and the tune is well-balanced with the songs of wind music, so there is nothing that is not suitable for writing, and there is nothing that does not work in any case. He said that even the cries of chickens and the barking of dogs could all be recorded. In reality, 2500 women were used, the meaning of the rest of the characters, and Hangul nationalism changed to Hangul universalism.