Sui


 * 1) When they built the Great Wall of China, the workers were angered and resentful and it strained the economy.
 * 2) People would break their limbs and injure themselves and break laws to avoid going into the military.
 * 3) One of it's Emperors, Emperor Yang, spent a lot of money and his was really cruel to the people.
 * 4) It had a short "lifetime".
 * 5) They attacked Korea four times, and Korea defeated them all those times.