Chinese thesaurus

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C#

Hi,
I'm working on a multilingual software where I need to show synonyms of Chinese text to the user. I couldn't find any API that could give synonyms of a given Chinese word. I tried MS-Office proofing tools but they do not support thesaurus for chinese, rather they provide grammar, translation etc.

Please suggest some API or workaround to show the synonyms for chinese words.

(for posting this question I couldn't find appropritate tags, if u can't answer, please help if u can let me know appropriate tags.)