Photo: The Sun

A 7.04-kilogram baby born in the city of Xinxiang in China's Henan Province has set the record for the heaviest baby born in China.

Chunchun was born in a caesarean section which lasted around 20 minutes on February 4. Both the mother and baby boy are doing fine, according to doctors who spoke with the Chinese newspaper Dahe Daily.

According to the Sun, mother Wang Yujuan, 29, said her pregnancy with the boy felt different than her pregnancy with Chunchun's big sister, now 6 years old, who weighed four kilograms at birth.

"I clearly felt that my body was more clumsy than when I had been pregnant with my daughter. My belly was bigger than it was then," Wang said.

"I guessed the baby would be four-and-a-half and five kilos. I never expected to hear that he weighs so much."

For the title of China's heaviest newborn, Chunchun edged out three other babies born between 2008 and 2010, all of whom weighed exactly 6.98 kilograms.

In a study published last year in scientific journal The Lancet, researchers set out to determine what causes high birth weight.

While they discovered that the baby's genes, or genes shared between mother and child, certainly contribute to high birth weight, the chance a baby will weigh more at birth is greatly increased if the mother gains excessive weight during pregnancy.

The study defined high birth weight as four kilograms or heavier.

The heaviest birth listed by Guinness World Records belongs to a baby boy born in 1879 in Ohio, who weighed 10.77 kilograms at birth and whose mother was said to be a "giantess." Unfortunately, the baby died 11 hours after birth.

The Sun