How is Zhuge Liang's hat made?

Zhuge Liang's hat is handmade like this:

Take a rectangular origami, fold it in half to make a cross crease, press both sides into a triangle toward the middle, fold the bottom upward, fold both sides toward the center line, fold the sharp corner downward, fold both sides into a triangle, fold it upward and then back, and unfold it below.

Zhuge Liang (181-23410-8) was born in Yang Du (now yinan county, Linyi City, Shandong Province). He was the prime minister of Shu and Han in the Three Kingdoms period and an outstanding politician, strategist, inventor and writer in ancient China.

Zhuge Liang went to Jingzhou with his uncle Zhuge Xuan in his early years. After Zhuge Xuan's death, Zhuge Liang lived in seclusion in Longzhong. When Liu Bei was attached to Liu Biao in Jingzhou, Zhuge Liang proposed to Liu Bei the strategy of occupying Jingzhou and Yizhou and uniting Sun Quan against Cao Cao. Liu Bei successfully established the Shuhan regime according to Zhuge Liang's strategy, and formed a tripartite confrontation with Sun Quan and Cao Cao.

In the first year of Zhangwu (22 1), Liu Bei proclaimed himself emperor and appointed Zhuge Liang as prime minister. After the defeat of Wu, Liu Bei entrusted Zhuge Liang to Yong 'an. After Liu Chan succeeded to the throne, Zhuge Liang was named the marquis of Wuxiang and was in charge of Yizhou animal husbandry. Diligent and prudent, big and small political affairs must be personally done, and rewards and punishments are strict; Make an alliance with Wu Dong to improve relations with all ethnic groups in southwest China; Carry out the reclamation policy and strengthen combat readiness.

Five northern expeditions to the Central Plains failed to achieve the purpose of reviving the Han Dynasty. Eventually, he died in Wuzhangyuan (now Qishan, Baoji City, Shaanxi Province) in the 12th year of Jianxing (234) at the age of 54. The late master pursued Shi as a loyal marquis of Wu, and later generations took marquis of Wu as their honorific title. Huan Wen of the Eastern Jin Dynasty was named King Wuxing. ?

The representative works of Zhuge Liang's prose include A Model and A Book of Commandments. He once invented the wooden ox, the flying horse, the Kongming lantern and so on, and transformed the crossbow, called Zhuge Lian crossbow, which can hit all targets with one crossbow. Zhuge Liang, a representative of loyal ministers and wise men in China traditional culture, devoted himself to his life and died.