Candy. The changing law of complex number is: in general, it ends directly with +s; Words ending in s, x, sh, ch, +es; Nouns ending in consonants and y need to change y into I first, and then+es; For nouns ending in vowels and y, y remains unchanged and is placed directly at the end of the word +s; When a noun ending in o becomes plural, directly add+s at the end; Nouns ending in f and fe need to be changed to ves first. The vowel letters are A, E, I, O and U, and all the letters except these five letters are consonants. Candy belongs to a consonant letter and ends with y, so you need to remove y first, change it to I, and finally add es, which is candy.