The Union Home Minister was speaking at the ground-breaking ceremony for the construction of a 400-bed hospital at Sathya Sai Grama in Muddehahalli near here.
According to written sources from ancient China, the chariot is reported to have been first used during the Xia dynasty. A Xia minister by the name of Xi Chong is credited with its invention, and the chariot is also said to have been deployed during the Battle of Gan in the 21st century BC.
The Assam CM had slammed Gandhi for demanding proof of the September 2016 surgical strike and had sought to know whether the BJP had ever demanded proof of him being the "son of Rajiv Gandhi".