81-year-old Liang Zifu and his 77-year-old wife Li Suying raised their four children in a cave near Nanchong city in southwest China's Sichuan province, where the couple has been living in the past 54 years.

The couple first moved to the cave because they couldn't afford building a house for themselves in the village when they first got married. Liang then settled a place in cave for him and his wife and moved in. The cave house now has three bedrooms, one kitchen, a living room and even a pigsty.

Local authorities have been trying to persuade the couple to move out for a better place to live in, but the couple declined and said they have got accustomed to their cave house, which is cooler than outside in summer and warmer in winter.