GM Hu Ronghua's Sandwiched Horse Defense Treatise Chapter 06

In Chapter 6, Black would use the Sandwiched Horse Defense with LEFT Ranked Chariot Variation. Black would choose to develop his chariot as a ranked chariot early in the game. There were five boards which discussed Red attacking with various formations.

• In the 1st board, Red would attack with the 3rd pawn advancement and left pawn ranked cannon variation.
• In the 2nd board Red would use the Double Headed Snake Pawns. It would be the most complicated in the chapter. 
• In the 3rd board, Red would use the pawn ranked chariot.
• In the 4th board, Red would attack with the trailblazer horse.
• In the 5th and last board, Black would choose to develop his right chariot early in the game.

The relevant Youtube videos have been embedded below.

References:

1. 胡, 荣华. 夹炮屏风 反宫马布局研究. Hong Kong and Singapore : 香港业余象棋协会 新加坡北斗象棋研究会, 1983.