Shortcut keys for upgrading urban skyline roads

In the city skyline game, the shortcut key for road upgrading is the pageup key. Players can raise the road by pressing the pageup key, and press the pagedown key if they want to lower the road. The specific operation steps of road heightening are as follows:

1. Select the road you want to upgrade.

2. Press the pageup key (generally the default setting is this operation).

3. The road surface will immediately rise to the required height.