The most challenging maps for you.

This map is the most difficult; the map author didn't directly answer the question on maps4heroes.

As far as I know, the author isn't active on maps4, unless he's using a different nickname.
Season seems to be answering on his Chinese website.

Since you're playing Xiedu, have you perhaps played such masterpieces as Lord of the Rings, Way Home, Harry Potter, Heroes of Jin Yong?

Added 1 minute ago
P.S. The end of the review on the portal made me smile; there's some truth to it.)

P.S. I'm currently playing through 2 maps, and then I want to play Xiedu. As soon as there's an answer, I'll start right away.