A. If you are in the U.S. there are 3 main options to consider:
a. China index funds such as ASHR
b. China funds, such as MCHFX
c. Chinese stocks, such as BABA
Be careful not to rely on a China index ETF, because a China index fund typically heavily concentrate in financials, natural resources, industrials, which probably are all the ones to avoid in a slowing economy.