日新月异

rì xīn yuè yì

changing by the day; rapid progress

Character by character

日rì
day

新xīn
new

月yuè
month

异yì
different

中国的交通发展日新月异。

Transport in China is developing at a breathtaking pace.

Tone: positive (praise).

Only for change that is good.

Learn this in Lesson 3 · HSK 5: 高铁与春运 (High-speed rail and the New Year rush)

A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. This lesson is free.