Hi may I know what clothes to bring for traveling to Shanghai on 18 March 2017 till 25 March 2017?

It is still a little early to know the weather in the following Mar. Anyway, according to the past records, it will still be a little cold, especially when it rains. I suggest you prepare overcoat, sweater, long-sleeved shirt and thick pants or jeans. If you are kind of person who cannot bear coldness, prepare long john as well in case.