不胫而走 [- jìnɡ ér zǒu]①(传播快而广) “runs without legs” — get round fast; spread like wildfire; spread far and wide; spread very quickly. ②(畅销) very popular; sell like hot cakes:
•¶ 此书一经问世， 便不胫而走。 As soon as it was published， the book had a big circulation.