The article title is a bit misleading as China has been buying bullion for a long time, and this topic has long been theorized, but it looks more likely to happen with each passing day.
What if:
1. a crises occurs in the Middle East (or someplace), possibly a USA military defeat,
2. the USA dollar craters as a result,
3. China steps in to save the world by announcing they are backing their currency with gold, just like the USA did until 1971.
If these be the times, the Bible talks about the Kings of the East and does not mention the USA. It would appear that the USA must become much weaker, and at the same time China becomes much stronger.