Do I have to transfer to Guangzhou to send express mail to Shaoguan?

Don't. The express delivery from Shaoguan to Shaoguan is only carried out in Shaoguan and will not be transferred to other places, so it will not pass through Guangzhou. Express delivery, also known as express delivery or express delivery, refers to a new mode of transportation in which logistics enterprises (including freight forwarders) deliver documents or packages entrusted by users from the sender to the recipient quickly and safely through their own independent networks or in the form of joint ventures (i.e. networking).