A few words first. Moved to a new place. Just had internet installed, with the interface in the living room. No air conditioning in the living room. Device situation: Two laptops (Macbook and Win7), one phone (seems useless). Requirement: Use the Win7 laptop to broadcast a wireless network. Tried with Macbook, but it could only create an Adhoc hotspot, which my Android phone didn't recognize. Tried Win7's built-in network creation—also Adhoc. Phone didn't recognize it, and although Macbook detected it, connection failed. Background introduction complete. Main text begins. Start Menu → Programs → Accessories. Right-click and open Command Prompt as Administrator. Enter the command: netsh wlan set hostednetwork mode=allow ssid=lantian key=lantian....