I initially thought that the Chinese-Chinese dictionary can be used in Kobo like default English dictionary, the result is not so.
As a Chinese, there are also some chinese characters don't recognition , especially the pronunciation.
So, I want to make a dictionary include Chinese-Chinese and English-Chinese. When reading with English books, this dictionary can translate some English words to Chinese, And when reading Chinese books, can also consult some rare characters or word pronunciation and meaning.
About merge the English-English dictionary with the English-Chinese dictionary, here some stardict dictionary file like Oxford English-Chinese is already included English-English and English-Chinese.
Btw. here anyway can rename dicthtml-ja.zip as dicthtml.zip to direct used in kobo?