It's kind of strange that the types shown in the above figure is 43,024 (including corpus header) while the number Dr. Xiao provides is 45,435 (excluding corpus header). Why?
Whe you make a wordlist of LCMC, you can choose to cut the Header section ("Only part of the file") and ignore tags <*>. In this way, the word list does not include the words in the header section. There are some words consiting of English letters. This is normal as they are words in the corpus (e.g. in scientific notations in text category J).
For Chinese data, the phrase query (i.e. Quick query) only searches for a "phrase" consisting of single characters separated by white spaces. Strange? But it is true. This feature is not very useful (but it is for English). You should use the Word query in this case - or the query builder if you to search all of them at one go.
Putting one or two spaces between two Chinese characters in Phrase Query will make Xaira either crash or churn out 'no solutions'. Anyway, your words help solve this puzzle. Thanks.