Question: how to connect mobile internet to lenovo laptop?
Answer: Touch App Menu on Home screen. Fig.1.
Tap Settings. Fig.2.
Tap More... ... 
Tap Tethering & portable hotspot. ... 
On Tethering & portable hotspot interface, tap the switch on the right to turn on Wi-Fi hotspot. ... 
Tap Set up Wi-Fi hotspot, set Network SSID (hotspot's name), Security and Password, then tap Save.