In this year, Ying Zheng unified the six countries and called himself the First Emperor, thinking that the Qin Dynasty would last forever.
Outside Xianyang Palace, a curtain of sky fell, and a master wearing glasses slowly taught a history lesson to the students:
In 210 BC, the First Emperor died on a sand dune platform.
Zhao Gao and Li Si tampered with the edict, and Hu Hai, the emperor's youngest son, ascended the throne and was known as the Second Emperor of Qin in history.
Three years later, Xiang Yu entered the Pass, killed Prince Ying of Qin, destroyed the Ying clan, and burned Xianyang Palace. The fire lasted for three days.
Qin then died.
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The Sky Curtain series of history lessons spans generations and has caused an uproar.
