Go ahead! Break her in every possible way ravaging all her holes!
But Chun-li is so strong and used to hard multiple rape, so I suggest to apply more psychological damage for her. I think Chun-li is proud a lot of her awesome big tits... so I suggest to torture them squeezing hard until them squirt something and stretching some meters in every directions like they would be rubber! Reduce her breast to unuseful two saggy pieces of meats! She'll be demoralizate herself looking at her ruined aspect!!! 😈😈😈
(examples)
https://e-hentai.org/s/e6da736b84/1009626-7
https://e-hentai.org/s/b4d64779aa/1009626-8
https://e-hentai.org/s/1fcf0c68ef/764247-36
https://e-hentai.org/s/bc5050f573/764247-37