Hi Eileen
China should be warming up by late April but there may be a few colder moments. At its hottest, it could be 20 degrees Celsius or just over but it could also be below 10 degrees on some days, so I would pack a coat and a jumper or two along with your suncream!
This website will give you more detailed information and a 5-day weather forecast:
http://worldweather.wmo.int/001/m001.htm
I don't have any information about who is flying from Glasgow but you may be able to get in touch with any others through the Community. Failing that, look out for our distinctive luggage tags at the airport.
Kind regards,
Olly, your editor