We will travel to Chengdu 4th January 2013. Could you tell us the expected temperature.

Hi, at that time, it will be cloudy and cold in that city, with the average temperature of about 4-5C. Sometimes, it may rain a little. So you need take along thick sweater, overcoat and Long John.
Mt. Emei will be open then. Don't worry! If you plan to visit the mountian then, I suggest you wear some warm clothes.