(Nowadays, most laptops or mobile phones and other devices are basically equipped with Wifi wireless network cards. It only takes 100 yuan to buy a wireless router at home, and it is very convenient to share broadband Internet access. But there are exceptions. If you are in a school dormitory, a hotel, or someone else's home, there may not be a router that allows you to connect multiple devices, mobile phones, and laptops to the Internet at the same time. In this case, you can only complain why you don't bring one with you routing?)
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