There have been some important factual questions asked and answered in the main comment thread. But they quickly get buried and are hard to find again / hard for new viewers to find. This thread is intended to help keep track of them.
This intro post will be updated to reflect the questions. Links to the relevant question and answer thread will be posted in corresponding posts below.
Feel free to suggest other questions that were discussed / answered in the main comments thread that should be linked here.
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1. Are CX and XY blood relatives?
2. Why did the King of Haoling strongly suspect that WXL was XY based on the things that CX told him (e.g., about WXL planting the poisonous bug in him)?
3. Why does XL suddenly get angry and show his demon eyes in episode 34?
4. When / how does XL find out that XY is a woman?