I wish to travel from Jieyang to Foshan(Guangzhou). Is there a high speed train for this route?

I'm afraid there is no direct high speed train for the route. Then I would suggest you transfer in Guangzhou. Well then, at JY Jinxianmen, you can take a shuttle bus to Chaoshan High-speed Railway Station in around 70min. Then catch a fast train to Guangzhou South. Upon getting there, you can take Nanhai Express line 3 to Nanhai Bus Station in Foshan.

Or you can take a direct long-distance bus instead, which seems more convenient. At JY City Bus Terminal (Qishan Bus Terminal), three buses are scheduled to Foshan every day, at 09:30, 15:30 and 22:50.

thank you for your response
can you also tell me the best way to travel from foshan(guangzhou) to zhejiang(near yiwu)

I see that most train tickets even for 10-15 days ahead of today seem sold out. So is there another way to get tickets?

Zhejiang is a province. I suppose your destination is Yiwu. Then the direct train shall be the best way to go and it is usually necessary to book the train tickets in advance. Once sold out, there is no means to get a ticket. Then I suggest you transfer to Guangzhou first and then take a tarin to Yiwu, because there are more trains for this route. Also train tickets should be booked in advance.