Is it a solvable Idiom Crossword Puzzle?
this is what I got without hints:



and after the hints:



my personal feelings:


万水千山&amp;山穷水尽 is a bit hard without hints, I was thinking about 万里之遥&amp;遥不可及/遥遥无期.
背城借一，I didn't even know this word until I googled "带城和一的成语".
A and 4, I still don't know what they are.


UPDATE after new hints: