thanks
Many thanks for Floor 6 and 7's kind replies and advice.
But I am afraid there may be some misunderstanding of the word
"Big 5".
When I say Big 5, I mean the old traditional Chinese characters which have not been simplified. If I follow Floor 7's advice, I will have to go back to the simplied Chinese characters again which is quite inconvenient to me.
I have been used to read articles with old traditional Chinese words for many years so I find it a bit inconvenient to read the simplified words.
Lastly, it seems my question has not yet been cleared:
Has SIS changed its encoding to simplied Chinese only? A few days ago,
I can still read both the old traditional Chinese words and the simplified words in SIS, but now I can read only the simplified version. Where has gone the old traditional versersion?