A rare climate change brought the world into an ice age, and Zhang Yi unexpectedly returned to a month before the low temperature hit. He did not back down, but used wisdom and actions to build a safe base integrating technology and warmth. He led his partners to reserve supplies and build facilities, which not only ensured the lives of those around him, but also took the initiative to lend a helping hand to those in need, conveying warmth and hope in the ice and snow, and wrote a story about courage, mutual assistance and growth.
