Tag Tieng Viet

Old town around Hanoi, Vietnam, Oct-Dec 2009

If I remember right, it means something like: careful/slowdown, children nearby.
Other than that, I have been told that some phone numbers are "pretty" and others ugly. Some business men/women even "buy" a pretty phone number. If I remember right, 8 and 9 are pretty numbers, 1 is ugly.