A woman from Rizhao, eastern China's Shandong province gave birth on Monday to quadruplets, local media reported.

The woman and her husband later named the four babies Dong, Nan, Xi and Bei, which respectively mean east, south, west and north.

The 27-year-old woman, Li Juan, is a teacher in Rizhao. She became pregnant with the quadruplets last November.

"I was worried and excited at the same time since having quadruplets can mean high risks for both the mother and the babies," said Li's husband.

At the suggestion of her doctor, Li checked in to the hospital during her 33rd week of gestation. Three days later, the four babies were successfully delivered. Two of them are boys and the other two are girls.

Li's doctor, Li Xianghong, said that all the babies are in good condition, but they need special care since they are premature. The doctor said that the babies will have to stay in the hospital for about a month.