九九归一

jiǔ jiǔ guī yī

Định nghĩa

1. nine divide by nine is one (abacus rule)
2. when all is said and done

Từ cấu thành 九九归一

• 一 一 yī: one
• 九 九 jiǔ: nine
• 归 归 guī: to return
• 九归 九归 jiǔ guī: abacus division rules (using a single-digit divisor)