China's yuan faces a cocktail of bearish headwinds even as Beijing scrambles to prop up the currency

• China's currency has more downside ahead, according to JPMorgan strategists.
• Beijing has attempted to prop up the weakening yuan, but the bank sees reason to stay bearish. 
• "The fundamental case for additional yuan weakness remains very much intact."

The Chinese yuan has weakened over recent months as the world's second largest economy faces a wobbling property sector, slow growth, declining trade and lower foreign investment.

Despite Beijing's attempts to prop up the currency, Wall Street isn't optimistic.