Responses

Lihuan only had a cold, not a serious illness (I'm assuming you're talking about the side story where he's in the hospital hooked up to an IV). In East Asia, if you get a cold it's pretty common for people to go the hospital to get an IV drip to replensih nutrients and rehydrate. Also in East Asia it's pretty easy to see a doctor so people can go to the hospital for even the smallest things. You'll see similar scenes in a lot of other manhua/manhwa/manga. So no need to worry too much about him
But what about his illness? Why was it just randomly sprinkled in? ┗( T﹏T )┛