The Earth's Core Furnace (Wisely Story珍藏版)

A famous Antarctic explorer Zhang Jian discovers a sudden iceberg emerging from an ice lake. Inside it is a small submarine with living beings sending distress signals. After rescuing it, the submarine astonishingly shoots into the sky instead of diving back into water. Zhang Jian and Wisely (Wei Sili) investigate this extraordinary event that holds the key to Earth's survival.