In the past century, society and common people's lives have undergone significant changes, thanks to engineers' reformed and advanced technologies as well as their essential spirit of invention. Today, these respected engineers' footprints can still be traced anywhere: either those glittering neon lights that remind us, while flying above through a modernized city in the evening, of the achievements of electronic engineers; or those cloud-kissing buildings and sophisticated road networks which evokes us respects for civil engineers; or even the airplanes that we are taking and cars we are driving and that are also contributed to the efforts of mechanic engineers... All of the above tells us that engineers have established a close contact with people's daily work and life. In other words, the state of citizens' living and working conditions largely depend upon engineers' qualities, which are partly due to their professional knowledge and skills, and are...