Great Leap Forward

to change; to become different; to turn into; to become (something else)

big / broad, immense

great strides, great progress, breakthrough

make great strides, make remarkable progress

age, era, period (of time) / the times, spirit of the age / antiquity / a time in one's life, one's days (in college etc.)

the Great Leap Forward

economics; the study of economics / economy

big; great

Short for 中国地方 (Chūgoku chihō): the Chūgoku region of Japan