Is the rhyme of Liuhe Hugh the same?

Same. According to the query of the old almanac, the initial of six is L, the final is iu, and Hugh is a syllable composed of the initial X and the final iu. They have the same vowel. Vowel refers to the academic language of Chinese phonology in China, and refers to the part of Chinese phonology except initials and tones. When syllables are combined, initials and finals are combined. So Liu and Hugh have the same vowel.