There are liars. For your own safety and not to lose employment opportunities, I suggest you check Baidu's official website. Now all power-saving construction companies have official website. You can check the telephone number of the human resources department. Even if you can't find it, other departments can do it. Then ask them to call the human resources department for help, and then check whether there is such a recruitment.

As far as I know, the recruitment contact of general units is through fixed telephone.