In rap music, "flow" (i.e. "word articulation") refers to the way a rapper expresses the rhythm, rhythm and intonation during singing. It embodies the rapper's skill, creativity, and personality.

Smooth "flow" is a rapper's ability to use a combination of language and music to deliver lyrics to the audience with a unique and coherent rhythm. It usually includes the following elements:

1. Rhythm and rhyme: "flow" is closely related to the rhythm of rap songs. A smooth "flow" means that the singer can perfectly match the rhythm and maintain an accurate sense of rhythm on every beat. This requires the singer to accurately grasp and control the rhythm of the song in order to break the rules and create a personalized rhythm pattern.

2. Skill and variability: An excellent "flow" requires not only a stable sense of rhythm, but also skill and variability. Rappers increase the richness and diversity of "flow" by using techniques such as different audio effects, lengthening or shortening of syllables, changes in pitch, and repetition of words. They may switch tempos between lyrics, use rapid succession or fluent verbal techniques to showcase their personal rapping style.

3. Incorporate emotion and expression: An excellent "flow" is not only superior in technique and rhythm, but also conveys the singer's emotion and expressive ability. Rappers create buzz by incorporating emotion and a unique personal style into their songs and convey their thoughts, feelings, and experiences to their listeners. This emotional expression makes the song more attractive and infectious.

4. Creativity and personality: Each rapper has his or her own unique "flow" that reflects their creativity and personality. They demonstrate their personal style and uniqueness through their flexible use of rhythm, selecting and arranging specific lyrics, and establishing and maintaining a connection with their audience. This creative and individual expression makes each rapper's "flow" unique.

In short, "flow" refers to the rhythm, rhythm and intonation of the singer in rap music during the singing process. It emphasizes the singer's skills, creativity and personality, and makes rap music richer, more interesting and uniquely charming through coordination with rhythm, use of skills, emotional expression and personal style.