GM Hu Ronghua's Sandwiched Horse Defense Treatise Chapter 10

In Chapter 9, Black would still play P7+1 very early to deny Red the chance to play P3+1. Red would use other methods to attack.  There are three boards to this chapter.

• Board 1: Red advances the Left Cannon as a Pawn Ranked Cannon C8+4
• Board 2: Red chooses to attack with the 59 Cannons.
• Board 3: Red advances the Left Cannon as a Riverbank Cannon C8+2

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.