Challenge: Red General Crossing the River: Forcing the Opponent into Passive Defense - Can you solve it?

In this tense position, the Red side holds initiative with the Chariot on file 4, rank 7, and the Pawn on file 4, rank 8. However, the Black side does not yield, with the General on file 6, rank 10, and two powerful Elephants on files 1 and 7. How can you defeat the opponent? Let's analyze the tactical strategies!