"The Sorcerer at the Red Cliffs 赤壁的妖术师 (chì bì dè yāo shù shī)"
Why is he a Demi-God:
In an act of mischief, Zhu Ge Liang decides to fool Zhou Yu 周瑜 into thinking he has the ability to control the weather. At an elaborately set up altar, Zhu Ge Liang performs a mysterious rite that he says will help change the wind direction, which was necessary in order for their fire strategy to work against the ships of Cao Cao 曹操. True enough, by that night the wind directions turn 180 degrees, finally putting in place the final gear in the machine that would be Cao Cao's terrible defeat. Everyone is fooled by Zhu Ge Liang, who absolutely cannot control the weather at all. He simply knew how to read the stars to foretell the weather. Easy peasy! All those meteorologists with their high-tech doppler radars should be ashamed of themselves!
Character ability 1: "The Seven Stars 七星 (qī xīng)"
At the very beginning of the game, when the initial 4 cards are being distributed amongst all players, you will be given a total of 11 cards. Pick 4 out of these 11 to be your starting hand, while the remaining cards are placed face down elsewhere (out of the game area). These extra cards will be referred to as "Stars". During your turn, right after the drawing phase, you can interchange any number of your on-hand cards with an identical number of your Stars.
Character ability 2: "Strong Gale 狂风 (kuáng fēng)"
At the end of your turn, you can discard 1 of your "Stars" and select 1 target player. From then till your next turn, this target player will suffer 1 additional unit of damage for all fire attribute damage.
Character ability 3: "Heavy Shroud 大雾 (dà wù)"
At the end of your turn, you can discard X number of "Stars" and select X number of target players. From then till your next turn, these target players will be protected from all damage except Lightning attribute damage.
Ability's relation to story:
Since Zhu Ge Liang knew how to read the stars to foretell weather, it is only natural that "The Seven Stars" is intricately linked to the story, specifically to the battle at Red Cliffs. What's more impressive is the game maker's use of weather elements in his other abilities "Strong Gale" and "Heavy Shroud". We already know that a gale was necessary for the fire to spread towards Cao Cao's army, and the deeper reference to fire attributed damage is well-appreciated.
"Heavy Shroud" is not part of his hocus-pocus ritual, but it still is related to the Red Cliffs battle. Prior to the main battle, Zhu Ge Liang used boats of straw to "harvest" 100,000 arrows for Zhou Yu. The shroud of haze was also fore-told in the stars and he used that to his advantage, deceiving the enemy into shooting at figurines of straw in the poor visibility.