How can https://en.wikipedia.org/wiki/American_middle_class https://en.wikipedia.org/wiki/American_middle_class cope with https://en.wikipedia.org/wiki/Renminbi

How can https://en.wikipedia.org/wiki/American_middle_class https://en.wikipedia.org/wiki/American_middle_class cope with https://en.wikipedia.org/wiki/Renminbi#Value https://en.wikipedia.org/wiki/Renminbi#Value economic/export/currency tricks, if every country follows them.