Some US economists assume that the exchange rate is the key to fixing the trade imbalance, while on the Chinese side there are economists from different schools and some also tend to believe in this assumption. However, such assumption failed in statistical test by using the trade data and real effective exchange rate recorded in China over the years.
Second, echoing the words of Lord Birket, I do not object to people looking at their watches when I am speaking. But I do strongly object when they start shaking them to make certain they are still working!