one shot training results are extremely poor, I cannot reproduce the results of the paper

[xiaqingsun]

When I train with a picture from the paper

my training results are as follows with the prompt "a painting of city, art by ch_fg4; ch_fg-neg" :

but the results in the paper are like this:

My training parameters are as follows:

Is there something wrong with my training process causing this poor result？

Thanks！