(I am surprised he didn’t mention the “yellow peril”.) If his criterion is forex intervention, he should be prepared to declare many other countries manipulators as well.
Figure 1: Log real trade weighted Chinese yuan (blue, left scale), and value of Chinese yuan against USD (red, right scale); value for 10/16 (red triangle). Up is a currency Chinese appreciation. Source: BIS and FRED.That’s because the Chinese currency has been appreciating, and the degree of estimated undervaluation has decreased over time. Even the Peterson Institute for International Economics, which has been adamant historically, recently estimated a 3% undervaluation.