In "The Black Fission of the Qin Empire", Qin Xiaogong died in the 43rd episode.

Plot summary:

The prince's matter has just been decided. Qianlong, who has been dormant for a long time, realizes that the time has come and intends to make a difference. The filial piety feasts the old ministers, hoping to kill Qianlong and end the trouble forever. Shang Yang learned about it later and pointed out that it was inappropriate to be filial to the public. Ying Qian faked his death. Gongsun Jia pretended to be a businessman and wanted to frame Shang Yang. Shang Yang and others discussed the expansion of Qin's army to strengthen its combat power. Qin Xiaogong returned to Hangu Pass and taught Ying Si at the pass that he must protect the law and trust Shang Jun. At the same time, he lamented that the Qin State had taken over all the land west of Hexi during his reign, and his long-cherished wish was fulfilled.

Qin Xiaogong Ying Quliang passed away at Hangu Pass. The whole country buried Qin Xiaogong in a grand ceremony. When the six countries heard about the death of Qin Xiaogong, Wei wanted to send troops to regain Hexi. In the same year, Ying Si ascended the throne as King of Qin and was known as King Huiwen of Qin in history. Uncle Hei was so sad that he committed suicide in front of the late emperor's tomb. Wang Shi wanted to break into the city to guard the mausoleum and violated Qin law. Shang Yang broke the law and made Wang Shi guilty of the crime, which brought hidden worries. Yingsi was very happy when he received the news that Yingqian was still alive. Qianlong secretly asked Gancheng to lead the elders and plot a comeback. At this time, Shang Yang once again expressed his intention to retire.