>>21
No, I just find it plain wrong to give a Mandarin pronunciation for an ancient term. Mandarin Chinese is especially known for holding the least conservative pronunciations (least matching to those from Middle Chinese), and you are citing it as a source pronunciation for a word loaned more than a thousand years ago?
I gave the Southern Chinese (namely Cantonese and Hokkien, might include Hakka also) varieties just because they have largely kept ancient sounds and thus are more reliable. Hokkien has a plenty of words that still sound similar to Japanese ones, for example 世界 and 國家 which are sekai and kokka in both languages (although the latter Japanese actually has as koku-ka, while Hokkien is kok-ka).