C611 There Is a Precipice Waterfall

Right, right, there is such a thick iron chain under the water. Although it has already rusted after being in the water for such a long time, at this critical moment, I didn't have the time to worry about it anymore. I quickly swam towards the direction of Donan, but because the speed of the flowing water was too fast, I was truly afraid.

Just as I was about to swim to the top of the chain