Am I remembering right that you're on a Mac? I don't know if any of these will work, because I guess it depends on what TTS voices you already have installed (if any), but you could try going into the Anki card browser > "cards..." and adding these codes to the front or back side, and see if any of them work...
There are some videos on YouTube about how to add audio to cards, like this one, but they always use English voices for their examples, so I don't know if there are extra steps to actually download voices for other languages. :P (Android mobile has it built in, so I didn't have to do anything.) But it's possible that one of these codes might work without extra hassle if you do have one of them installed.
no subject
{{tts zh_CN voices=Apple_Ting-Ting:Hanzi}}
{{tts zh_TW voices=Apple_Mei-Jia:Hanzi}}
{{tts zh_CN voices=Apple_Li-mu:Hanzi}}
{{tts zh_CN voices=Apple_Yu-shu:Hanzi}}
There are some videos on YouTube about how to add audio to cards, like this one, but they always use English voices for their examples, so I don't know if there are extra steps to actually download voices for other languages. :P (Android mobile has it built in, so I didn't have to do anything.) But it's possible that one of these codes might work without extra hassle if you do have one of them installed.