C1387 The True Heart of the Sea

Lee Yifann was puzzled at one time and made a lot of guesses about what Heart of Sea were.

Lee Yifann had thought that Heart of Sea would be some kind of heavenly material, such as various treasures that grew in the absolute realm, just like the Ten Thousand Year Snow Lotus that Lee Yifann had previously obtained.

Or perhaps, the Heart of Sea is a type of mineral