Question: When was China unified by Qin Shi Huang?
About the article "Great Wall of China", section "Early walls".

Candidate passages:
Qin Shi Huang is a Chinese television series based on the life of Qin Shi Huang, the First Emperor who unified China under the Qin Dynasty in 221 BC.
The series was filmed between 1999 and 2000 and was first released in 2001 in Hong Kong and Thailand and in 2002 in Singapore.
In China, the series was edited and altered by historians and experts before it was approved for broadcast on CCTV-1 in 2007. 
  Qin Shi Huang orders his generals to capture present-day Guangdong and Guangxi.
By place. 
 "Rise of the Great Wall" (1986) - a 63 episode TV series chronicling the events from the emperor's birth until his death.
"The Not-So-Great Wall Of China" (1999) - one of the episodes of "History Bites".
Bob Bainborough played Qin Shi Huang.
"A Step into the Past" (2001) - a Hong Kong TVB production based on a science fiction novel by Huang Yi.
"Qin Shi Huang" (2002) - a mainland Chinese TV series production.
It features a semi-fictionalized story of the emperor's life, from his childhood until his death.
Zhang Fengyi starred as Qin Shi Huang. ""
(2006) - a drama-documentary special about Qin Shi Huang.
James Pax played the emperor.
It was shown on Channel 4 in the United Kingdom in 2006.
"Secrets of China's First Emperor, Tyrant and Visionary" (2006) - a documentary by National Geographic.
It provided an in-depth look at the magnificent and controversial ruler.
"China's First Emperor" (2008) - a special three-hour documentary by The History Channel.
Xu Pengkai played Qin Shi Huang.
"Kingdom" (2012) - An anime featured during the Warring States Period (475-221BC) portraying Qin Shi Huang before he became emperor Shi Huangdi, and his legacy of uniting China.  
Asian anti-intellectualism.
Imperial China.
Qin Shi Huang (246–210 BC), the first Emperor of unified China, consolidated political thought, and power, by suppressing freedom of speech at the suggestion of Chancellor Li Si, who justified such anti-intellectualism by accusing the intelligentsia of falsely praising the emperor, and of dissenting through libel.
From 213 to 206 BC, it was generally thought that the works of the Hundred Schools of Thought were incinerated, especially the "Shi Jing" (Classic of Poetry, c. 1000 BC) and the "Shujing" (Classic of History, c. 6th century BC).
The exceptions were books by Qin historians, and books of Legalism, an early type of totalitarianism—and the Chancellor's philosophic school.
(see the Burning of books and burying of scholars).
However, upon further inspection of Chinese historical annals like Shi Ji and Han Shu, this was not the case.
The Qin Empire kept every one copy of these books in the Imperial Library; ordered that the books should be banned in public.
Thus, everyone who was stashing these works were given an appointed time to submit the books to be burned; anyone who violated this command were executed.
Modern Chinese scholars also argued that most ancient work of literature and philosophy were not destroyed by Qin Dynasty; It was mostly destroyed by Xiang Yu when he burned down the Qin palace. 
The He Shi Bi () is a piece of jade which plays an important part in many historical stories in Ancient China.
Found in the State of Chu by a man named Bian He, it was first made into a jade disc, then into the Imperial Seal of China by Qin Shi Huang.