You can only do one row. If you don't think it is necessary to do the next row, the cost will definitely be cheaper, but it should not be half. By the way, did you do it? I also want to consult my hometown dentist for correction, saying that correction only takes 3300 months. Now I don't know where the cost performance in Nanning is high, but it takes more than 10 thousand yuan to find out. . .