Former governor of China's central bank. He fretted publicly about the dominance of the dollar as long ago as 2009. In April 2026 he said China now had a "golden window of opportunity" to promote the yuan's use beyond its shores, thanks to America's tariffs, sanctions and geopolitical conflicts.
Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.