As mobile phone text messages like "I CN C U" show, it is often possible to leave out a lot of data without losing much meaning.
诸如“I CN C U”这样的手机短信,通常可以省略大量数据而不会失去意义。
For passengers who need to change or return their tickets, they can change the tickets or get their fund through 12306.cn or the ticket office at the station.
对于需要改签或退票的乘客,他们可以在12306平台上或在车站售票处就能改签或退款。
Websites like Top100.cn and Google are doing that.