For some Chinese-Art-Style painting, the training result is really bad.

[wangmengHB]

I have trained a style image named by "love in Fangzhuang".
here is the style image link:
https://www.wikiart.org/en/wu-guanzhong/love-in-fangzhuang-2002
but the output model is really bad for use.

[wangmengHB]

I am wondering how to improve the training result.