Uu errands scan code exam in the test center QR code. Uu running errands online exam should scan the on-site QR code. You can use it if you're not here. You can watch WeChat on your mobile phone or download a software. Write down the address, in more detail, and the phone number of the recipient. UU running errands is a very practical agent software, which can let others help you buy things and do what you need, save your time and make life more convenient.