Domestic Public Security teaches everyone how to scale the Great Firewall

For most netizens, crossing the Great Firewall can be divided into ordinary users and advanced users: Ordinary users, who simply search for information or entertainment games for learning, do not involve or rarely involve sensitive remarks and political issues. These netizens can achieve this by simply using a device (mobile phone, computer, etc.) with a proxy or VPN tool, and they don't need to deliberately hide anything or guard against anything. Even if they are targeted and found to have visited overseas websites, they will not be difficult for you, at most they will criticize, educate, and delete posts, because there are areas in the law that are actually difficult to define. As long as you don't mention the content banned outside the Great Firewall and its sources, you can continue to use the domestic network the next day. Or some friends' companies can apply for public or test external network access. For those who prevent users from crossing the Great Firewall, they can be divided into single-item protection and in-depth prevention. Ordinary users only need simple firewall protection, that is, to physically separate the network when using a proxy. Domestic mobile phones and apps generally have backdoors for relevant departments, especially Android phones. There is a permission in the permission settings called "Read application list" that cannot be completely turned off on domestic Android phones (but now domestic mobile phones are basically not flashed with self-made ROMs). What software you install on your phone is clear to the relevant departments. The reason you were summoned for tea before was that the people who contacted you were not yet investigated, and it didn't reach that point in the end. These are domestic apps. Generally, self-used browsers, Zhihu, WeChat, QQ, etc., and the browser built into the phone or domestic apps are not suitable for using the same device both inside and outside the Great Firewall. I will not discuss the theory of crossing the Great Firewall here to avoid arguments, but friends who are interested can try it. Uninstall WeChat, QQ, and other apps, and uninstall games or domestic apps on your phone. It is best to use foreign devices for crossing the Great Firewall. For Apple phones, log out of your ID in settings and log in to the foreign store when downloading apps. If you must use a domestic mobile phone to access the internet across the Great Firewall, it is recommended to find a phone repairer to physically remove all built-in microphones on the phone and replace them with external interfaces. Use the most compliant input method, and those who understand will understand. Furthermore, it is about the network. Do not bring a SIM card to a phone that crosses the Great Firewall. Before, it could be associated with you, mainly using the phone and device number. For internet access, use WLAN to connect to Wi-Fi or use another phone's hotspot. A dedicated Wi-Fi network for crossing the Great Firewall can be physically isolated, and Taidian has provided options. When not in use, turn off the power of the device for crossing the Great Firewall and turn on airplane mode. In short, doing these can ensure that you are completely prevented from being summoned for tea. Perhaps you unintentionally disclosed a little personal information, and it was coincidentally inferred, which is also quite possible.

As for advanced users, they generally engage in some activities by crossing the Great Firewall, causing relatively serious impacts in a certain field or environment, or even engaging in illegal crimes. Regardless of the reason for becoming an advanced user of crossing the Great Firewall, please note that you are definitely a key target of investigation by the relevant departments and will be investigated at all costs, even if you are outside the Great Firewall. For these users, in addition to the basic methods of crossing the Great Firewall, having an overseas mobile number is essential, but this is not the starting point, because most overseas numbers require an email for application (how to get a clean email first depends on the individual). Then there are the devices. It is best to use a mobile phone with a free community version of the network in overseas areas, and the mobile phone must not have any apps from within the Great Firewall installed. If you are within the Great Firewall, except for receiving verification codes, it is best to separate your phone number and mobile phone, because even if it is an overseas phone number, it will still connect to domestic base stations when used in China. The relevant departments still have ways to find you and summon you for tea. The key is the network. Roaming international networks with overseas numbers is generally expensive, and there is no way around this. If you want to use the network within the Great Firewall, it is best not to use your own network (this is different from ordinary users crossing the Great Firewall. Ordinary users crossing the Great Firewall generally do not have a relatively serious impact, and even if they find you, you think there is not much difference. If they cannot find the device for crossing the Great Firewall, they will just be bored). With the development of technology, cracking WiFi passwords is not a difficult task. Of course, if you don't want to bother, you can also go to a nearby store, buy something, and you know the rest. As for the choice of proxy, this cannot be said, and you need to identify it yourself. It is best to use one that does not require personal information. If you do all of the above, as long as the physical device for crossing the Great Firewall is not discovered, no matter from which aspect they start, they will not be able to lock onto you, unless you confess yourself.