Gǎigé kāifàng shì Zhōngguó zǒuxiàng fánróng de bìyóuzhīlù.
Reform and opening-up is the indispensable path for China toward prosperity.
Tips
history
Rooted in 孟子 (Gaozi I): 义,人路也 - righteousness is the human road. Zhu Xi's commentary describes righteousness as 必由之路 - the road one cannot step off. The moral weight persists in modern political usage.
usage
Pattern: 'X 是 Y 的必由之路' = 'X is the inevitable path to Y.' Used to declare one approach as the sole correct way - absolute and slightly didactic in tone.