N.C. Gen. Stat. § 15-14
Before any sale of said property is made under the provisions of this Article, however, the said sheriff or police department making the same shall first advertise the sale by publishing a notice thereof in some newspaper published in the said county at least one time not less than 10 days prior to the date of sale, and by posting a notice of the sale at the courthouse door and at three other public places in the said county. Said notice shall specify the time and place of sale, and contain a sufficient description of the articles of property to be sold. It shall not be required that the sale lay open for increase bids or objections, but it may be deemed closed when the purchaser at the sale pays the amount of the accepted bid.
N.C. Gen. Stat. § 15-14