What are public lines and private lines? What's the difference between an individual and a public line first?

The private line is opened separately.

After the public line is finished, you can decide whether to open a personal line according to your own options.

For example, you should always choose the option of adding tin goodwill to public lines.

Then wait until the bus line is finished, and then open the tin line.

When you open the game again, notice a small icon in the lower right corner. Tin also seems to belong to small cameras.

You can choose the personal line that is opened, and the icon that is not opened is black.

If you look carefully, you will soon find that whoever opens the personal line will light up at the beginning of the game.

No route leaves darkness.

The system actually suspects that I am watering, and there is no faucet around me.