增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分。
Mobile payment is very popular in China, that has made people's daily life more and more convenience. Most people are used to pay by scanning QR codes. By mobile payment, you can pay easy wherever you go. You can buy breakfast on the street and pay by scanning with you smart phone. However, in the subway station, you scan with your smart phone buy your ticket. Mobile payment is popular to most Chinese people, allowing us to say goodbye to wallets and bank cards. So it has greatly been changed people's lives in China. It seemed that China is really leading in some ways and is also sweeping other nations.
