MACAO, June 25 -- Two panda cubs in China's Macao Special Administrative Region celebrated their first birthday Sunday when they turned one year old.

This is also the first time they have met the public together with their mother.

The twin brothers sat on the ground, eating their birthday cakes made of bamboos, while behind the glass windows, visitors watched them with joy and ecstasy.

Visitors sang songs and chanted Happy Birthday to Jianjian and Kangkang in Cantonese.

One of the panda care team members said Jianjian now weighs about 23 kg and Kangkang 22 kg. Kangkang, the younger brother, has gained much weight as he was only 53 grams at birth, he said.

The two are still in the baby stage and fed mainly on breast milk and milk powder. They are also starting to learn from their mother's behavior such as picking up bamboos.

The brothers and their parents will meet the public in Macao every afternoon during the summer vacation.