Just a hint: Litecoin's volume on many chinese exchanges, which I know is what you're referring to, is faked. Many of those exchanges have 0% trading fees, so users just use bots and trade back and forth with themselves to create the illusion of volume.
Also, the name "dark" coin" in Mandarin(Chinese) is not Devilcoin. Whoever told you that is "FUDing"/lying.
75% of the volume of LTC comes from OKCoin and they charge trading fees, another 20% from BTCe. And no I am not lying the Kanji used to name Darkcoin is exactly that. You can check with Alexy who maintains our Chinese board on DCT or Tungfa who is in Asia and manages a lot of the PR there.