"Chanting in unison three times" in Engpsh is usually referred to as "chanting three times in unison."

This phrase originates from the practice of group recitation, where a group of people recite something together in unison to improve their pronunciation, rhythm, and sense of community. This practice is common in some Chinese language classrooms, where students are asked to chant vocabulary words or phrases together three times.

Example in Engpsh: "The teacher asked the students to chant the vocabulary words three times in unison."
Example Translation in Chinese: "老师要求学生们齐读词汇三遍。"