This has probably been the worst kept secret in Asia, but the head of the Chinese General Staff has admitted that they are refitting the former Soviet carrier Varyag as an operational aircraft carrier:

The head of China’s General Staff of the People’s Liberation Army (PLA) has confirmed that China’s first aircraft carrier is under construction.

Gen Chen Bingde refused to say when the carrier – a remodelled Soviet-era vessel, the Varyag – would be ready.

I don’t think that this ship will have any real military significance, but neither did the USS Langley.

This is not the development of a significant military capability, but rather like the Langley, it represents the ability to develop procedures and doctrine for later, and one would assume more capable, ships.