Brad Pitt and Angelina Jolie learning Chinese because they want to adopt baby from China?

Angelina Jolie and Brad Pitt have reportedly started to learn Mandarin after becoming intrigued by Chinese culture.

Brangelina have also enrolled their six children in classes so they can get to grips with the language, along with Ange's father Jon Voight.

'Brad and Angelina want their children to be international and reckon China will soon be the most powerful country in the world,' says a source.

'It's also the world's largest culture and one of the oldest.'

There may be another reason that Brad, 49, and Angelina, 37, have developed an interest in the country - they've sparked rumours that they're planning to adopt a baby from China.

The couple are already parents to children from Cambodia, Vietnam and Ethiopia and have three biological kids together.

'Angie is broody and friends reckon the next child will be Chinese,' the insider tells the Sun On Sunday.

'They have become so obsessed with the country.'

SEE PICTURES Brad Pitt and Angelina Jolie - a love story in photos

SEE PICTURES Angelina Jolie - from sultry teenage to sexy Hollywood star

SEE PICTURES Angelina Jolie and Brad Pitt nuzzle up at Cannes

Anna Duff