Wu had already been eight months pregnant when Li left to board Xuelong in November, heading to Antarctica on an expedition.

"We have decided to nickname our baby 'little sun'," Li said with pride. "We wish that my baby will always be happy and optimistic."

A few says before the baby was born, Li sent his wife a video wishing her the best on the delivery.

On Jan. 9, when their baby was born, Li prepared a unique gift for his little girl -- a cup that had been suppressed under deep sea water.

"I've never said anything romantic to my wife," said Li. "I just want to send a message to her and my baby through this New Year gift: they are the deepest loves of my life."