How to go from foshan to yiwu by bus or rail and which is better and fast

There is a train daily from Foshan to Yiwu. The train departs at 08:01 and takes about 18 hours. Well, the fastest way is by air. You can go to Guangzhou from Foshan first, then take flight from Guangzhou to Yiwu. The flight journey is about 1 hour and 50 minutes.