What is the solution to game 35 of the Chinese Chess Remnant Game?

Knight 2 into 3, general 5 into 4, marshal 4 into 5, sergeant 4 into 5 (if general 4 into 1, then knight 3 retreats to 4, and Black will lose the sergeant)

Knight 3 retreats to 4, sergeant 5 into 6, marshal 4 retreats to 1, general 4 retreats to 1, knight 4 retreats to 2, sergeant 6 into 5, knight 2 retreats to 4, general 4 into 1 ......

No matter how Black plays the two moves mentioned above, the end is the same.

And this is the position where a single knight wins over a single sergeant, a seven-step capture of a sergeant, and the following moves are

Knight 4 retreats 5, general 4 retreats 1, knight 5 retreats 3, sergeant 5 retreats 6, knight 3 retreats 4, sergeant 6 retreats 5, knight 4 retreats 6, sergeant 5 retreats 6, knight 6 retreats 8, sergeant 6 retreats 5, a sergeant win

This is the position of a single knight winning the battle of the sergeant.