You know nothing about economics, it seems. Liquidity in domestic economy will be due to local currency. Rather, the situation is totally different with the PBOC trying to simulate the economy and injecting liquidity in the market where it is required, and trying to cool hot asset bubbles.
A very small reason.
The main reasons are these:
1. Currency Depreciation: Euro and Yen have depreciated heavily giving Japanese and European exporters cost advantage. Yen has depreciated by as much as 45% since 2012 against the Yuan. PBOC isn't trying to depreciate in fear of capital outflows, and their strategic objective to make the currency get reserve status.
2. Trade Protectionism: Gone are days when free trade was the game in town. Also a decade back, China was a small player so its surplus and trade didn't pinch, especially since their economies were rather good. But now, China has become the poster boy for getting trade benefits, and everyone seems to be going protectionist against China. The biggest industries being hit by this is Solar Panels, Steel, and the like.
3. Loosing Competitiveness:
Due to rising wages, enforcement of standards etc.
A very small reason? Kidding me.
For this year, Chinese Yuan rises up by about 14%, while Chinese export for 1st quarter 2015 combined still rises up 4.7%. Don't forget the world's trade value has been dramatically shrinking so far for this year. That means the market share in terms of value for Chinese goods is expanding rapidly. Look at your India's case, you got 13% export down YtoY for Jan and Feb combined, that is 17.7 percentage points lower than China. However, u guys are still smart enough to generate beautiful "growth" data to become the "fastest economy growing" country in the world, the title India has been dreaming for a long time.