Well...I wouldn’t say choose his ex. He felt that it was his responsibility because she didn’t have any family and they grew up together, so he felt like he was her only family(wth). And, her injury also had something to do with him, but he wasn’t the one that caused it. But, Ji Xiangkong was. Staying with her literally every moment of the day, and Qiu Ying and him didn’t even get to talk much. Then Qiu Ying receives a job, which was her dream, so she goes back. She did that partly because she felt that the Phoenix Team didn’t need her anymore. She writes a letter to everyone and leaves without them knowing. The next day, Ji Xiangkong and his friend are the first ones to see it. But after, he’s still so polite to his ex. I don’t really know if he made an actual choice, but to me, it just felt like he made his ex girlfriend his priority during that time.
After Ji Xiangkong and Qiu Ying were together and they made the Phoenix Team, Miya(his ex girlfriend) got a serious injury and she was blind for a while. Her assistant called Ji Xiangkong and Ji Xiangkong rushed to the hospital. He stayed by her side for days and it was like he didn't care about Qiu Ying. Then one day, Qiu Ying went to visit Miya with this bouquet of flowers and she saw them hugging. Also, after Miya recovered, she still pretended to be blind because she wanted Ji Xiangkong to stay with her. What's more frustrating is that Ji Xiangkong saw this thing in the corner of the hospital room and he suspected that she was pretending to be blind but he didn't expose her. Then when she confessed to him that she was pretending, he was like "Oh whatever, it's fine. As long as you've recovered." It made me so mad that whenever Miya or Ji Xiangkong appeared on the screen, it made me want to slap them.
I can understand where you're coming from. Ji Xiangkong neglecting Qiu Ying for Miya was definitely frustrating…
I also don't get why Miya would still bother trying to get JXK after he rejected her. Her fans said that Qiu Ying was destroying JXK's and Miya's relationship but Miya's actually the one destroying Qiu Ying's and JXK's relationship.