Passengers need to fill in their WeChat account or Laos or China mobile phone number before making a call, so that drivers can contact passengers if necessary. In general, passengers and drivers can contact each other through the built-in instant messaging function of the app. After the passenger clicks the call button, the surrounding leisure drivers can take the order and communicate before driving to pick up the passenger. According to the unified billing rules, the system will automatically charge. Passengers can scan the QR code on WeChat or pay in RMB or Lao PDR in cash. Passengers can also add the customer service WeChat or phone number on the app to make a reservation for use.