I bet my friend that southerners don't know what curb means.

Yes, I think my friend bet you that southerners don't know what curb means. I don't think they have ever been to the northeast. Southerners may not know. If you have been to the northeast, southerners who have stayed in the northeast will also know something faintly, because many southerners have more contact with the northeast people in the northeast. After a long time, no one will know something if they have more contact with men. So just southerners who have never been to the north or have little contact with northerners don't know what curb means. I remember saying that there is such a story in a sketch. A man had a car accident and said he hit the curb, but when he called the police, he said Dalian accent and hit the curb, so the obedient people thought it was a duck and made a lot of jokes. This shows that there are indeed southerners, and I don't know what the northeast containment means.