large gold reserve or large trade surplus will support the currency in forex market, however, let's use a simple example.. China only produce $100 of goods per years, if central bank issue $100 worth of new currency, then there will be no inflation... if central bank for some reason issue $1000 of new money.. severe inflation follows.. in China, this is exactly the case.. since China has large trade surplus for long time, when local companies earned the US$, they have to sell to banks into RMB for next purchase.. you see.. as the company borrow money from bank (new credit), new currency supply was created.. so call money supply multiple effect... so it is possible to have strong currency in forex market but has inflation domestically.. that being said, it is not very common... in most countries who experience spiral inflation... usually their currency depreciate in currency market.. .