I only watched to episode 8 and haven't continued. The answer is yes and no. There seems to be a body swap in this drama. So when she is herself, she knows how to fight a little. However, when she swapped body with the ML, she's very strong fighter.
Every person has diferent things that like and dislike. I think, if it makes you uncoformable it's ok to not continue…
That's how i see it too. She didn't want to be his sister; if people feel iffy about this drama, why people love Go Ahead so much. In Go Ahead, they grew up like siblings.
in the ending does she go back to the real world and meet the modern Hou Chi or stay in the parallel world?
Really, i read the last page of the Manhua to check the ending and she cultivated and became power and was fighting a bad guy in the parallel world. They were separated because she went school and haven't see each other
http://m.webcomicsapp.com/mobile/book/read.html?mangaId=5baf1ff9d5626e0e91680a87