If you reheat the food, the bacteria will die but the toxins will still be there and they will still make you sick. With this type of food poisoning, you usually vomit anytime from immediately after eating to 7 hours later. Some people also get diarrhea. Bacillus cereus can also cause diarrhea that strikes 6-15 hours after eating. There is also a type of non-contagious food poisoning caused by the bacteria Clostridium perfringens3 .
Later, Emperor Wu of Han constructed the Great Wall in a large scale. He had Yanmenguan Pass restored in 130BC, and the Qin Dynasty Wall renovated in 127BC. In order to protect the Hexi Corridor, he ordered the defensive line between Yongdeng County and Jiuquan in Gansu Province be built in 121BC.
Updated March 03, 2017. The Great Wall of China is not a continuous wall but is a collection of short walls that often follow the crest of hills on the southern edge of the Mongolian plain. The Great Wall of China, known as long Wall of 10,000 Li in China, extends about 8,850 kilometers (5,500 miles). Building the Great Wall of China A first set of walls, designed to keep Mongol nomads out of China, were built of earth and stones in wood frames during the Qin Dynasty (221-206 BCE). Some additions and modifications were made to these simple walls over the next millennium but the major construction of the modern walls began in the Ming Dynasty (1388-1644 CE).