"If it wasn't for the disease, our life would be totally different from what it is now," said Gao Zhixia.
"I just wanted my wife to live longer and have no regrets," said Gu Xiangdong.
The couple started traveling in 1999. Gao Zhixia says their first trip helped her relax, allowing her to start recovering from her intensive cancer treatments.
They then began organizing trips with groups of friends throughout China.
They say their trip to Tibet made them realize they needed a vehicle of their own to travel with. The couple now have a retrofitted van which they can sleep, eat and shower in.
Gu Xiangdong says he believes their travels have saved his wife's life.
"The most important thing for us is enjoying the company between a husband and wife. We have done that for over forty years, especially through hard times," said Gu Xiangdong.