C438 The Remnant Talisman on the Wall

As he spoke, Third Uncle took out his phone and looked at it. He said, "It's already past eight o'clock. We will only do a simple survey after we enter. If everything goes smoothly, we won't be out before ten o'clock. If we still haven't come out by ten o'clock, then you will have to knock on the Soul-shaking Gong. Remember, knock on it three times in the four directions of the south, east, north