Why did the legendary mermaid in the blue sea speak human words in ancient times, but not in modern times? And there is a strange cultural relic in the third episode.

Mermaids must learn to speak. The ancient mermaid knew Jin Yong since she was a child, and later grew up together, so she learned to speak, while the modern fish could not speak at first, and then she learned to speak after watching the computer all night. The setting of this TV series is that the mermaid is not born to speak human words, but she has a very strong learning ability and can learn it in a short time.