Volume 6: Opposite direction cannons is the opening discussed in this volume.

Plum Flower Manual by Wang Game 1: Opposite direction cannons: Both sides use the filed chariot and fight it out at the river bank.
Game 2: Opposite direction cannons: Both FR and black push horse to the riverbank to try to catch red chariot
Game 3: Opposite direction cannons: Both FR and black pushes horse to the riverbank to try to catch red chariot
Game 4: Opposite direction cannons: Both FR with riverbank chariot. Black offers early chariot exchange.
Game 5: Opposite direction cannons: Red uses the river bank chariot while black uses the pawn ranked chariot.

 

 The modern day ECCO tag(s) for this volume include d50.

Volume 6 is dedicated to the opposite direction cannons. Games 1 and 2 discuss the battle at the riverbank by the chariots! Enjoy!
A much more detailed and translated text with many new comments and explanations to help beginners can be found in the published version. It is available in both print version and ebook version on Amazon.com.