How does Xiaomi WiFi Range Extender N300 amplify the wireless signal?

The purpose of using an amplifier is to enhance and amplify an existing wireless signal, so before setting it, you must know which signal you want to amplify and the wireless password for that signal.The amplifier works like a relay. The main router is the T-bit, the amplifier is the second bit, the WiFi signal is the relay stick, and the mobile phone, computer and other devices are the end point.The first and second runners carry the baton to the finish line by running back and forth, so that the WiFi signal can be transmitted to a distant destination.The more athletes participate in the relay, the farther the WiFi signal travels.