Catchy and catchy are both correct.
Langlangkou is an idiom, which means the sound is loud and smooth when reciting poetry and articles. From Lao She's "Poetry and Allegro": "Prose is not subject to so many restrictions, although prose also pays attention to the sonorous tone and can be catchy."
Langlang catchy: Langlang: the sound of jade hitting each other, metaphor The loud sound of reading. Refers to proficiency in reading and speaking smoothly. It also means that the diction is popular and easy to recite orally. Wang Tao of the Qing Dynasty "Songyin Man Lu·Lingbo Women's History": "I have liked to read since I was a child, and I taught him Tang poems, which are catchy." Translation: I liked to read since I was a child, so I taught him Tang poems, and he can read them catchy. .
Extended information:
Catchy
Grammar is more formal; used as object, attributive, complement; has a complimentary meaning
Used as object , attributive, complement; refers to the sound of reading
Example The syllables are neat and well-proportioned, and the levels are in harmony, which will give a sense of rhythm and beautiful melody. If the rhyme is arranged well, it will be more harmonious, sweet, catchy, and Make the preceding and following sentences seamless and enhance the expressive effect of the language.
Catchy
Synonyms for catchy.
The synonyms of the word are straight and round, with a rhythm and a rhythm.
The antonym is 诘诱聱gna.
Reference materials: Baidu Encyclopedia - Lang Lang Shangkou
Reference materials: Baidu Encyclopedia - Lang Lang Shangkou