Satellite images have revealed that China is expanding its shipyard thoroughly, according to USNI News. It is believed that after the completion of this expansion work, China will start building nuclear submarine on a larger scale.
According to the Office of Naval Intelligence, by 2030 , the number of nuclear submarines invading China will rise to 6.
Commercial satellite imagery analysis shows work on a new construction hall at Huludao's Bohai Shipyard. The structure seems to be essentially identical to the one constructed there in 2015. This is widely believed to be for the construction of nuclear submarines for a new generation.
Maritime Business World