Duan Zimu's group indeed did not launch an attack in the afternoon.
But, they weren't idle either.
They began exploring the surrounding terrain, slowly familiarizing themselves with the environment. Even though occasionally a stray shot might send them back to the start, it was better than doing nothing. So they'd go back to the starting point and happily carry their guns inward, enjoying this full-health revival cheat.
Meanwhile, Jiu Zhou and others didn't waste their time either.
Wanting to keep the attackers suppressed on the beach was completely impossible. And in three days, even if they were knocked down repeatedly, they could easily cover all areas.
Therefore, the opponents were destined to get closer to their camp each time.
They couldn't stop it.
However, they could use their actions to slow down the attackers' search speed on the island, trying as much as possible to delay time.
Making it through three days shouldn't be a problem.