Everyone continued working at night.
However, they didn't go out to gather materials again under Fu Rui's reminder.
All of them obediently stayed in the village and tried their best to be as quiet as possible. They did not want to make too much noise as they made bows and barriers.
Fu Rui was tired and rested early. When he woke up in the morning the next day, the first thing he did was to sign in on the system.
"Ding. Congratulations to the host for obtaining proficiency in whistling!"
Whistling?
Fu Rui gained more knowledge once again.
At the same time, he gained a certain understanding of the so-called whistling.
To put it bluntly, it was similar to the flag language of World War II. The difference was that it was transmitted through sound and not images.
"This is a good thing. Furthermore, it can be used immediately."
