how json dump Japanese

[yunkai]

help,please.

I am coding a spider-code to collect message on a Japanese website, storing data using json-module

however, default json dump the data with Unicode. cant see raw Japanese

I see one solution on the internet is

json.loads('このコーディネートのスタイリストについて',encoding='utf-8')

but, this keyword is not available in json dump!

json.dump('このコーディネートのスタイリストについて',fp,encoding='utf-8')

this code raise an error that cant decode the 'gbk'!

but i cant encode my data structure into Unicode.
how can I see raw Japanese in my json file?