Confucius was right - Lu conquered Yue without much resistance.
In one book I read, the author said, "Confucius based on the fact that Lu invaded Yue by boat and not on land. His interpretation was really brilliant."
In another book, the author said, "It was the Yue people who lived by the water. Lu people were not strong in battle in water. The army had still to advance by foot. Probably Confucius just wanted to comfort his own people by saying that they would win the battle despite a disadvantageous hexagram. It was the positive thinking of the people that helped Lu to win the war."
There is no record of Confucius using what we know as Wen Wang Gua. This method of divination using the hexagrams without consulting the hexagram and line texts of the Yijing was supposed to be the invention of Jing Fang in the Han Dynasty, many hundred years after Confucius time. It is not impossible that Confucius had already had the idea of using a more mathematical method to do divination. In my next posting, I will talk about this method.