The Romance of the Three Kingdoms shows Zhuge Liang's ingenious calculation, knowing astronomy above and geography below.

In the Romance of the Three Kingdoms, Zhuge Liang's ingenious calculation and his knowledge of astronomy and geography are mainly manifested in the following parts:

1. Borrowing arrows from grass boats: Zhuge Liang successfully predicted and used foggy weather in a limited period of ten days, borrowing 100,000 arrows. This fully shows his astronomical knowledge and geographical observation ability, as well as his wit and strategy.

2. Borrowing from the East Wind: In Battle of Red Cliffs, Zhuge Liang predicted that there would be an east wind in three days, and made use of this meteorological condition to formulate a fire attack strategy, thus helping Sun Liu's allied forces win. This once again proves his profound knowledge in astronomy and meteorology.

3. Huarong Road captured the enemy: Zhuge Liang anticipated that Cao Cao would send Guan Yu to intercept when Huarong Road fell, and thus preset a plan to let Guan Yu let Cao go out of loyalty, so that important people of the enemy could escape, and at the same time, Guan Yu owed a favor. This plot shows Zhuge Liang's profound understanding of human nature and accurate judgment of the enemy.

4. Seven captures of Meng Huo: In the confrontation with Meng Huo, the leader of Nan Man, Zhuge Liang captured Meng Huo seven times, but each time he was given a chance to escape until Meng Huo was truly convinced. This plot reflects Zhuge Liang's profound understanding of human nature, culture and geography, as well as his strategy and wisdom.

5. Six out of Qishan: Zhuge Liang's northern expedition to Cao Wei, six out of Qishan. Although faced with all kinds of difficulties, he can always accurately judge the situation, adjust the strategy and keep calm, and finally make the Shu-Han army win under his command. This conspiracy fully demonstrated his military talent, strategic vision and perseverance.

The above is the main part of the Romance of the Three Kingdoms that shows Zhuge Liang's ingenious calculation and knowledge of astronomy and geography.