Zhao Hai's purpose in coming to the South China Sea was to see if the people on the 72 islands of the South China Sea really had a secret base here. If there was, he would have to be more careful when he dealt with the 72 islands in the future.
The area Zhao Hai was in had always been his suspicion. He really wanted to know what was in this area. Was it really like what the people on the 72 islands in the South China Sea said? were there sea beasts everywhere that attacked people?
Zhao Hai knew very well that for other people, exploring the ocean might be very dangerous, because the people of the sixth clan knew too little about the ocean. But for the people of the 72 islands in the South China Sea, it might be different.