Thanx to wallcraft's info. Beside, I found this link contains many free CJK TrueType fonts.
http://www.wazu.jp/gallery/Fonts_Chi...aditional.html.
Edited:
Sorry for over-post. I downloaded "Ming(for ISO10646)" from HK government. It's just 3.5 MB and have over 30 thousand chars. After put it in "/home/root/.font", reboot failed. I am doing a reflashing.