Like when he decided to trade his cultivation method for God tier set of consolidating equipment. He refused because it would have chained him to the Palace. The only thing he had to do is say yes then take the equipment then cancel the deal if the problems arise in the future. Since he is a scoundrel I can hardly believe he would have problems with it. It is not like they forced him to work for them. The cultivation method is useless to them so you already offended them by cheating them. To not consider something so easy is beyond me
The way he acts around Tian Er and Little Witch. Tian Er turned into Fat Cat (yeah, Fat Cat, MC's naming sense sucks) and used MC to boost her cultivation and tried to kill him in order to get stronger but couldnt do it because apperently his beast Tiger aura subdued her and made her fall for him. WTF?! She literally just said that she would have killed him in cold blood if his "aura" didnt affected her and he just brushes it off and adds her in his harem. As for Little Witch she is a part of a dying clan that was wrongfully accused of being heretics and forced to nearly extinction. The only one who can save her clan is MC and the clan uses everything to rope him in, even tried to force him to wear the seal that would have killed him if he betrayed the clan. And forced him to live a life of luxury full of women and anything he wanted. Sounds horrible I know. MC, of course, refuses and since they had no other choice they even decided to drop the seal and even give him the clans secret tehniques, but he still refuses. Why? Because Little Witch asked MC to take the dragon baby from her mother to train him, because that was "heartless". When I read that part I felt like I was reading a joke. Not to mention all the people MC killed that he didnt even know casually and then has the audacity to consider that girl heartless after she just tried to take some lizard baby and not even for herself, but for him blows my mind. Oh and before you ask, both the Little Witch and Tian Er are hot, so no discrimination on that part
When he swindled Xiao branch sect for their money, then left his own signature to spite them which almost got him killed for example
when he provokes and offends all major sects in New Moon City and then when Xiao Luochang goes to destroy him, he says he didn't do anything to deserve his hate and that he'll destroy him first (which he does and, oh boy, it was fun as hell). True, the real reason Luochang wanted to kill him was because he wanted to crush Yun Che before he could treaten him (oh, the irony...), but Yun Che had no way of knowing that because he isn't a mind reader. At first when Yun Che said he didn't do anything to deserve his animosity, I thought he was being sarcastic.