In that critical moment, Li Yi downed a bottle of Advanced-Level HP Potion and activated his Spirit Ape's Protection. After that, he raised his fishing rod to block it.
He managed to block the Large Pistol Shrimp's attack. Archers did not have any blocking skills, so even if Li Yi managed to block the claw, he still would not obtain the invincibility effect. In an instant, he lost 1,500+ HP.
The Large Pistol Shrimp waved its claw again, but Li Yi could not raise his fishing rod again.
Archers did not have a corresponding melee skill. They could only use normal attacks (with whatever angles they liked), and all of the weapons in King of Pantheon had ATK SPD so they could all use normal attacks. The first attack could be used instantaneously, but the second needed a loading bar. The purple-colored fishing rod's ATK SPD (2 seconds each) added to Li Yi's own ATK SPD still meant that he needed to wait more than a second before he could use it.