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Hi all,
One of my wall receptacles suddenly stopped working this morning. I
tested the bad one with voltmeter and found out that there were 120 VAC
between hot and ground, 0 VAC between hot and neutral, and 120 VAC
between neutral and ground. I live in North America and the normal
reading between hot and neutral should be 120 VAC. I removed the
receptacle and tested again on the wires directly and got the same
result. I also tested other receptacles connecting to the same breaker
but they were working. Worring there might be a short circuit, I shut
off the breaker and call the electrician.

Does anyone have the same problem like this before?
Did the neutral wire become hot, or did the hot and ground got
reversed?

Assuming the wiring was correct to start with, you have an open neutral
wire. The 120 volts you are getting from the neutral to the ground is
probably some load feeding back . I have seen recepticals that have a bar
between the two screws on one side burn into. This can open up either the
neutral or the hot wire depending on the one that burns into.