There is nothing controversial about China selling the BTC it has seized, regardless of their attitude towards it - because they, as a government, are hypocrites who do whatever they want, while censoring the internet for their people and forbidding them from trading cryptocurrencies because they are afraid of influence coming from the West.
That figure of 194 000 BTC seems exaggerated and made up to me, but even if China had all those BTC (which I sincerely doubt), $16 billion for an economy with an annual GDP of over $18 trillion is a drop in the ocean.