China Deep Freezing DPRK

The article stresses that this has not been confirmed by the Chinese, but according to
The Australian:

CHINA'S relationship with its former satellite North Korea is unravelling fast, underlined by reports yesterday that the People's Bank of China has frozen all North Korea's accounts.

South Korean parliamentarian Park Jin said he had learned on a visit to Washington that through its action the Chinese central bank had responded to persistent North Korean counterfeiting of its currency, the yuan.
[...]

If true, this is encouraging.