TTS very low accurate question

As a Chinese, I’m glad that rhasspy supports Mandarin, but I’m frustrated that its TTS part only supports pocketsphinx, and its recognition accuracy is very low, so low that it can’t be used properly. I want to know if there is any way to solve this problem, can I change the model or train or what, I hope there are good people who can teach me by hand, thank you very much.