Luo Guan Zhong sought to heroize Liu Bei's enterprise in the novel SGYY, and he meant to establish Zhuge Liang as the greatest man in that period of history. It is evident that LGZ spent more effort writing the ZGL stories than the other ones. He also took two of the other most brilliant strategists -- Sima Yi and Zhou Yu, and made them foils to ZGL. In that, he is continuing a folk tradition that deifies the Shu prime minister.
However, his treatment of ZGL in the novel leaves a lot to be desired (Ok, I know Han Xin is probably lurking around the corner with a handful of stones). Specifically, ZGL emerges as a fortune-teller and somewhat an opportunist in the novel. Here are some instances of this unfortunate figure:
(1) The borrowing of the East Wind: While it is mentioned that he predicted the fog in the episode of the arrows, the East Wind chapter left it unclear whether ZGL predicted the wind, or the wind really came at his bidding.
(2) Phrenology: At the first sight of Wei Yan, ZGL ordered him beheaded because from the shape of Wei Yan's skull, ZGL could see that he was to become a traitor. What happened to the cautious, scientific ZGL that LGZ would have us believe in?
(3) Advice to Liu Bei: When Liu Bei and Pang Tong headed west, ZGL sent them a message advising against an attack, as the stars told him that it would be disadvantageous. The prediction was borne out.
(4) The spirit of General Ma: During the campaign in the south, ZGL was blocked by poisonous springs in the path. He prayed at General Ma's temple and was directed to see Meng Huo's brother, who solved the problem for him.
(5) Astrology: ZGL foresaw his death by the dimming of "his" star, and did some ritual to revive the star. It was actually working -- until Wei Yan stepped on his little lamps.
When I first read the novel and was a Shu-fanatic, I objected to these fortune-teller images of my favourite hero. Even now, I still want to see a hero in ZGL, but it seems that his characterization is marred by these unnecessarily details (well I see them as unnecessarily).
Ok, that's a little protest against LGZ, but can someone convince me that he had good reasons for putting those stories in? Or are there other explanations for all the superstitious-y things that ZGL did?

