Sun Tzu proved on the battlefield that his theories were effective (for example, at the Battle of Boju), that he had a successful military career, and that he wrote "The Art of War" based on his tested expertise. However, the "Zuozhuan", a historical text written centuries earlier than the "Shiji", provides a much more detailed account of the Battle of Boju, but does not mention Sun Tzu at all. Beginning around the 12th century, some scholars began to doubt the historical existence of Sun Tzu, primarily on the grounds that he is not mentioned in the historical classic "Zuo zhuan", which mentions
The Star Called Sun The song is generally considered to be one of the most popular songs by Kino. It is popular among novice guitarists in Eastern Europe, and there are many cover versions. The song is broadcast daily by Russian radio stations. The band Brazzaville has recorded a cover version of "The Star Called Sun" in English called «Star Called Sun» for the album East L.A. Breeze (2006). The lyrics are different to the original: it is about the death of the singer's mother David Brown. The song was sung in Udmurt language by the folklore band "Buranovskiye Babushki" (, ) Praskovia Fyodorova