The sea turtle saying that it had 100 techniques to give the other party a lesson was just to scare him. It did have a deep understanding of the ice element, but as for the techniques to give others a lesson, there was no point in learning them for a turtle. Moreover, master 100 of those? If it really did that, then it meant it really had a lot of spare time.
It was just trash talking to deal some damage to the other party's psychological defense... Even if it didn't work, there was no loss—it was just talk.
Regardless of the realm, trash talk would always end up working at some point. After some time, even an Immortal would be affected by it.
The sea turtle waved its forelegs, pinning down the cold-faced Venerable.
But before it could do anything, the Venerable yelled, "I-I said, I said everything I know!"