Answer:
I would not click the link, but would check my bill on the account and delete the email.
Step-by-step explanation:
Zhang should not click any links that seem unsafe and fraud to her. These links often carry computer viruses and can hack into her accounts.
She should go to her official account on the website and check the bill herself. If she sees the bill is unchanged, she should delete the e-mail and completely ignore it. She could also put the address on the spam list.
In case of changes were really made, she should first check if the email address from which she got the message is the same as the one stated on the website. If not, she should write to the officially stated address and report changes, as well as the suspicious email she has received. Zhang should still not click on the link.
This is done because of internet security. Many of these spam emails carry ways to hack into accounts, get passwords, and usually steal funds from online bills we have. This is why none of us should ever click suspicious links from emails we are not sure are real, and why should we be careful about the details in the emails we receive (such as spelling of the name, stated in the example above).